4415d2410c
concat-deps detects relative path segments (AKA /../) and removes these in cancel_relative(...) to save space (by removing the preceding path segment from the output path). But that logic doesn't account for preceding /./ segments, resulting in paths to non-existing files. This then resulted in mysterious, unneeded compiling of seemingly unchanged files for my incremental cross-toolset builds. I actually assumed some error in my complex gbuild static changes, which are already driving me crazy... "make -d" showed these wrong paths, but inspecting the ".d" for the actual files (from gcc output), they were ok; took me a while to realize the problem were LO's concat-dep files for libraries. But instead of complicating cancel_relative(), this just jumps over /./ segments in the input path. cancel_relative() works on the &cursor_out copy anyway. Change-Id: I2a8ecd04fdfa790859668d690a102cfb156aa649 Reviewed-on: https://gerrit.libreoffice.org/c/core/+/126345 Tested-by: Jenkins Reviewed-by: Jan-Marek Glogowski <glogow@fbihome.de>
1235 lines
34 KiB
C
1235 lines
34 KiB
C
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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* Copyright (C) 2011 Norbert Thiebaud
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* License: GPLv3
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*/
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/* define to activate stats reporting on hash usage*/
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/* #define HASH_STAT */
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/* ===============================================
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* Set-up: defines to identify the system and system related properties
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* ===============================================
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*/
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#ifdef __APPLE__
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#ifdef __x86_64__
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#undef CORE_BIG_ENDIAN
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#define CORE_LITTLE_ENDIAN
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#else
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#define CORE_BIG_ENDIAN
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#undef CORE_LITTLE_ENDIAN
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#endif
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#endif
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#ifdef _AIX
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#define CORE_BIG_ENDIAN
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#undef CORE_LITTLE_ENDIAN
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#endif /* Def _AIX */
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#ifdef _MSC_VER
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#undef CORE_BIG_ENDIAN
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#define CORE_LITTLE_ENDIAN
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#endif /* Def _MSC_VER */
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#if defined(__linux) || defined(__FreeBSD__)
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#include <sys/param.h>
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#if __BYTE_ORDER == __LITTLE_ENDIAN
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#undef CORE_BIG_ENDIAN
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#define CORE_LITTLE_ENDIAN
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#else /* !(__BYTE_ORDER == __LITTLE_ENDIAN) */
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#if __BYTE_ORDER == __BIG_ENDIAN
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#define CORE_BIG_ENDIAN
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#undef CORE_LITTLE_ENDIAN
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#endif /* __BYTE_ORDER == __BIG_ENDIAN */
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#endif /* !(__BYTE_ORDER == __LITTLE_ENDIAN) */
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#endif /* Def __linux */
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#if defined(__OpenBSD__) || defined(__FreeBSD__) || \
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defined(__NetBSD__) || defined(__DragonFly__)
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#include <machine/endian.h>
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#if _BYTE_ORDER == _LITTLE_ENDIAN
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#undef CORE_BIG_ENDIAN
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#define CORE_LITTLE_ENDIAN
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#else /* !(_BYTE_ORDER == _LITTLE_ENDIAN) */
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#if _BYTE_ORDER == _BIG_ENDIAN
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#define CORE_BIG_ENDIAN
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#undef CORE_LITTLE_ENDIAN
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#endif /* _BYTE_ORDER == _BIG_ENDIAN */
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#endif /* !(_BYTE_ORDER == _LITTLE_ENDIAN) */
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#endif /* Def *BSD */
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#if defined(__HAIKU__)
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#include <endian.h>
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#if __BYTE_ORDER == __LITTLE_ENDIAN
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#undef CORE_BIG_ENDIAN
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#define CORE_LITTLE_ENDIAN
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#else /* !(__BYTE_ORDER == __LITTLE_ENDIAN) */
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#if __BYTE_ORDER == __BIG_ENDIAN
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#define CORE_BIG_ENDIAN
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#undef CORE_LITTLE_ENDIAN
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#endif /* __BYTE_ORDER == __BIG_ENDIAN */
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#endif /* !(__BYTE_ORDER == __LITTLE_ENDIAN) */
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#endif /* Def __HAIKU__ */
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#ifdef __sun
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#ifdef __sparc
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#define CORE_BIG_ENDIAN
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#undef CORE_LITTLE_ENDIAN
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#else /* Ndef __sparc */
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#undef CORE_BIG_ENDIAN
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#define CORE_LITTLE_ENDIAN
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#endif /* Ndef __sparc */
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#endif /* Def __sun */
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#include <assert.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <string.h>
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#include <ctype.h>
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#ifdef _MSC_VER
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#include <io.h>
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#else
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#include <unistd.h>
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#endif
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#include <config_options.h>
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/* modes */
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#ifdef _MSC_VER
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#define FILE_O_RDONLY _O_RDONLY
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#define FILE_O_BINARY _O_BINARY
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#define PATHNCMP _strnicmp /* MSVC converts paths to lower-case sometimes? */
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#define ssize_t long
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#define S_ISREG(mode) (((mode) & _S_IFMT) == (_S_IFREG)) /* MSVC does not have this macro */
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#else /* not windaube */
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#define FILE_O_RDONLY O_RDONLY
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#define FILE_O_BINARY 0
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#define PATHNCMP strncmp
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#endif /* not windaube */
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#ifndef TRUE
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#define TRUE 1
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#endif
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#ifndef FALSE
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#define FALSE 0
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#endif
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static int internal_boost = 0;
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static char* base_dir;
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static char* work_dir;
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static size_t work_dir_len;
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#ifdef __GNUC__
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#define clz __builtin_clz
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#else
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static int clz(unsigned int value)
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{
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int result = 32;
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while(value)
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{
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value >>= 1;
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result -= 1;
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}
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return result;
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}
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#endif
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static unsigned int get_unaligned_uint(const unsigned char* cursor)
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{
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unsigned int result;
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memcpy(&result, cursor, sizeof(unsigned int));
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return result;
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}
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/* ===============================================
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* memory pool for fast fix-size allocation (non-thread-safe)
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* ===============================================
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*/
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struct pool
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{
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void* head_free; /**< head of a linked list of freed element */
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char* fresh; /**< top of a memory block to dig new element */
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char* tail; /**< to detect end of extent... when fresh pass tail */
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void* extent; /**< pointer to the primary extent block */
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int size_elem; /**< size of an element. */
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int primary; /**< primary allocation in bytes */
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int secondary; /**< secondary allocation in bytes */
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};
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#define POOL_ALIGN_INCREMENT 8 /**< alignment, must be a power of 2 and of size > to sizeof(void*) */
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static void* pool_take_extent(struct pool* pool, int allocate)
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{
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unsigned int size = 0;
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void* extent;
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void* data = NULL;
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if(pool->extent)
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{
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/* we already have an extent, so this is a secondary */
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if(pool->secondary)
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{
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size = pool->secondary;
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}
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}
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else
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{
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assert(pool->primary);
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size = pool->primary;
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}
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if(size)
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{
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extent = malloc(size);
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if(extent)
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{
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*(void**)extent = pool->extent;
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pool->extent = extent;
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if(allocate)
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{
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data = ((char*)extent) + POOL_ALIGN_INCREMENT;
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pool->fresh = ((char*)data) + pool->size_elem;
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pool->tail = pool->fresh + (size - pool->size_elem);
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}
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else
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{
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pool->fresh = ((char*)extent) + POOL_ALIGN_INCREMENT;
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pool->tail = pool->fresh + (size - pool->size_elem);
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}
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}
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}
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return data;
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}
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/* Create a memory pool for fix size objects
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* this is a simplified implementation that
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* is _not_ thread safe.
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*/
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static struct pool* pool_create(int size_elem, int primary, int secondary)
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{
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struct pool* pool;
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assert(primary > 0);
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assert(secondary >= 0);
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assert(size_elem > 0);
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pool = (struct pool*)calloc(1, sizeof(struct pool));
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if(!pool) return NULL;
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/* Adjust the element size so that it be aligned, and so that an element could
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* at least contain a void*
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*/
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pool->size_elem = size_elem = (size_elem + POOL_ALIGN_INCREMENT - 1) & ~(POOL_ALIGN_INCREMENT - 1);
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pool->primary = (size_elem * primary) + POOL_ALIGN_INCREMENT;
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pool->secondary = secondary > 0 ? (size_elem * secondary) + POOL_ALIGN_INCREMENT : 0;
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pool_take_extent(pool, FALSE);
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return pool;
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}
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static void pool_destroy(struct pool* pool)
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{
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void* extent;
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void* next;
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if(pool != NULL)
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{
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extent = pool->extent;
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while(extent)
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{
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next = *(void**)extent;
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free(extent);
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extent = next;
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}
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free(pool);
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}
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}
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static void* pool_alloc(struct pool* pool)
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{
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void* data;
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data = pool->head_free;
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if(data == NULL)
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{
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/* we have no old-freed elem */
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if(pool->fresh <= pool->tail)
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{
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/* pick a slice of the current extent */
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data = (void*)pool->fresh;
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pool->fresh += pool->size_elem;
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}
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else
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{
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/* allocate a new extent */
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data = pool_take_extent(pool, TRUE);
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}
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}
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else
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{
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/* re-used old freed element by chopping the head of the free list */
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pool->head_free = *(void**)data;
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}
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return data;
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}
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/* ===============================================
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* Hash implementation customized to be just tracking
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* a unique list of string (i.e no data associated
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* with the key, no need for retrieval, etc...
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*
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* This is tuned for the particular use-case we have here
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* measures in tail_build showed that
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* we can get north of 4000 distinct values stored in a hash
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* the collision rate is at worse around 2%
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* the collision needing an expensive memcmp to resolve
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* have a rate typically at 1 per 1000
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* for tail_build we register 37229 unique key
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* with a total of 377 extra memcmp needed
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* which is completely negligible compared to the
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* number of memcmp required to eliminate duplicate
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* entry (north of 2.5 millions for tail_build)
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* ===============================================
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*/
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struct hash_elem
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{
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struct hash_elem* next;
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const char* key;
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int key_len;
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};
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struct hash
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{
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struct hash_elem** array;
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struct pool* elems_pool;
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unsigned int used;
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unsigned int size;
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unsigned int load_limit;
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#ifdef HASH_STAT
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int stored;
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int collisions;
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int cost;
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int memcmp;
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#endif
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};
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/* The following hash_compute function was adapted from :
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* lookup3.c, by Bob Jenkins, May 2006, Public Domain.
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*
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* The changes from the original are mostly cosmetic
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*/
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#define rot(x,k) (((x)<<(k)) | ((x)>>(32-(k))))
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#if defined CORE_BIG_ENDIAN
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#define MASK_C1 0xFFFFFF00
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#define MASK_C2 0xFFFF0000
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#define MASK_C3 0xFF000000
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#elif defined CORE_LITTLE_ENDIAN
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#define MASK_C1 0xFFFFFF
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#define MASK_C2 0xFFFF
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#define MASK_C3 0xFF
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#else
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#error "Missing Endianness definition"
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#endif
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#define mix(a,b,c) \
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{ \
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a -= c; a ^= rot(c, 4); c += b; \
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b -= a; b ^= rot(a, 6); a += c; \
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c -= b; c ^= rot(b, 8); b += a; \
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a -= c; a ^= rot(c,16); c += b; \
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b -= a; b ^= rot(a,19); a += c; \
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c -= b; c ^= rot(b, 4); b += a; \
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}
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#define final(a,b,c) \
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{ \
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c ^= b; c -= rot(b,14); \
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a ^= c; a -= rot(c,11); \
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b ^= a; b -= rot(a,25); \
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c ^= b; c -= rot(b,16); \
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a ^= c; a -= rot(c,4); \
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b ^= a; b -= rot(a,14); \
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c ^= b; c -= rot(b,24); \
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}
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static unsigned int hash_compute( struct hash const * hash, const char* key, int length)
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{
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unsigned int a;
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unsigned int b;
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unsigned int c; /* internal state */
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const unsigned char* uk = (const unsigned char*)key;
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/* Set up the internal state */
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a = b = c = 0xdeadbeef + (length << 2);
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/* we use this to 'hash' full path with mostly a common root
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* let's now waste too much cycles hashing mostly constant stuff
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*/
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if(length > 36)
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{
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uk += length - 36;
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length = 36;
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}
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/*------ all but last block: aligned reads and affect 32 bits of (a,b,c) */
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while (length > 12)
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{
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a += get_unaligned_uint(uk);
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b += get_unaligned_uint(uk+4);
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c += get_unaligned_uint(uk+8);
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mix(a,b,c);
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length -= 12;
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uk += 12;
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}
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/*----------------------------- handle the last (probably partial) block */
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/* Note: we possibly over-read, which would trigger complaint from VALGRIND
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* but we mask the undefined stuff if any, so we are still good, thanks
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* to alignment of memory allocation and tail-memory management overhead
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* we always can read 3 bytes past the official end without triggering
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* a segfault -- if you find a platform/compiler couple for which that postulate
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* is false, then you just need to over-allocate by 2 more bytes in file_load()
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* file_load already over-allocate by 1 to stick a \0 at the end of the buffer.
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*/
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switch(length)
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{
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case 12: c+=get_unaligned_uint(uk+8); b+=get_unaligned_uint(uk+4); a+=get_unaligned_uint(uk); break;
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case 11: c+=get_unaligned_uint(uk+8) & MASK_C1; b+=get_unaligned_uint(uk+4); a+=get_unaligned_uint(uk); break;
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case 10: c+=get_unaligned_uint(uk+8) & MASK_C2; b+=get_unaligned_uint(uk+4); a+=get_unaligned_uint(uk); break;
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case 9 : c+=get_unaligned_uint(uk+8) & MASK_C3; b+=get_unaligned_uint(uk+4); a+=get_unaligned_uint(uk); break;
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case 8 : b+=get_unaligned_uint(uk+4); a+=get_unaligned_uint(uk); break;
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case 7 : b+=get_unaligned_uint(uk+4) & MASK_C1; a+=get_unaligned_uint(uk); break;
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case 6 : b+=get_unaligned_uint(uk+4) & MASK_C2; a+=get_unaligned_uint(uk); break;
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case 5 : b+=get_unaligned_uint(uk+4) & MASK_C3; a+=get_unaligned_uint(uk); break;
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case 4 : a+=get_unaligned_uint(uk); break;
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case 3 : a+=get_unaligned_uint(uk) & MASK_C1; break;
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case 2 : a+=get_unaligned_uint(uk) & MASK_C2; break;
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case 1 : a+=get_unaligned_uint(uk) & MASK_C3; break;
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case 0 : return c & hash->size; /* zero length strings require no mixing */
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}
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final(a,b,c);
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return c & hash->size;
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}
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static void hash_destroy(struct hash* hash)
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{
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if(hash)
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{
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if(hash->array)
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{
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free(hash->array);
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}
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if(hash->elems_pool)
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{
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pool_destroy(hash->elems_pool);
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}
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free(hash);
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}
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}
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static struct hash* hash_create(unsigned int size)
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{
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struct hash* hash;
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assert(size > 0);
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hash = (struct hash*)(calloc(1, sizeof(struct hash)));
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if(hash)
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{
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size += (size >> 2) + 1; /* ~ 75% load factor */
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if(size >= 15)
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{
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hash->size = (((unsigned int)0xFFFFFFFF) >> clz((unsigned int)size));
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}
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else
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{
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hash->size = size = 15;
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}
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hash->load_limit = hash->size - (hash->size >> 2);
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hash->used = 0;
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hash->array = (struct hash_elem**)calloc(hash->size + 1, sizeof(struct hash_elem*));
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if(hash->array == NULL)
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{
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hash_destroy(hash);
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hash = NULL;
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}
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}
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if(hash)
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{
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hash->elems_pool = pool_create(sizeof(struct hash_elem),
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size, size << 1);
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if(!hash->elems_pool)
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{
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hash_destroy(hash);
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hash = NULL;
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}
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}
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return hash;
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}
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static void hash_resize(struct hash* hash)
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|
{
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unsigned int old_size = hash->size;
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unsigned int hashed;
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struct hash_elem* hash_elem;
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struct hash_elem* next;
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struct hash_elem** array;
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unsigned int i;
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hash->size = (old_size << 1) + 1;
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/* we really should avoid to get there... so print a message to alert of the condition */
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fprintf(stderr, "resize hash %u -> %u\n", old_size, hash->size);
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if(hash->size == old_size)
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{
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return;
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}
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array = (struct hash_elem**)calloc(hash->size + 1, sizeof(struct hash_elem*));
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if(array)
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{
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hash->load_limit = hash->size - (hash->size >> 2);
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for(i=0; i <= old_size; i++)
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{
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hash_elem = (struct hash_elem*)hash->array[i];
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while(hash_elem)
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{
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next = hash_elem->next;
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hashed = hash_compute(hash, hash_elem->key, hash_elem->key_len);
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hash_elem->next = array[hashed];
|
|
array[hashed] = hash_elem;
|
|
hash_elem = next;
|
|
}
|
|
}
|
|
free(hash->array);
|
|
hash->array = (struct hash_elem**)array;
|
|
}
|
|
else
|
|
{
|
|
hash->size = old_size;
|
|
}
|
|
}
|
|
|
|
static int compare_key(struct hash const * hash, const char* a, const char* b, int len, int const * cost)
|
|
{
|
|
#ifdef HASH_STAT
|
|
*cost += 1;
|
|
hash->memcmp += 1;
|
|
#else
|
|
(void) hash;
|
|
(void) cost;
|
|
#endif
|
|
return memcmp(a,b, len);
|
|
}
|
|
|
|
/* a customized hash_store function that just store the key and return
|
|
* TRUE if the key was effectively stored, or FALSE if the key was already there
|
|
*/
|
|
static int hash_store(struct hash* hash, const char* key, int key_len)
|
|
{
|
|
unsigned int hashed;
|
|
struct hash_elem* hash_elem;
|
|
int cost = 0;
|
|
|
|
(void) cost;
|
|
hashed = hash_compute(hash, key, key_len);
|
|
#ifdef HASH_STAT
|
|
hash->stored += 1;
|
|
#endif
|
|
hash_elem = (struct hash_elem*)hash->array[hashed];
|
|
while(hash_elem && (hash_elem->key_len != key_len || compare_key(hash, hash_elem->key, key, key_len, &cost)))
|
|
{
|
|
hash_elem = hash_elem->next;
|
|
}
|
|
|
|
if(!hash_elem)
|
|
{
|
|
hash_elem = (struct hash_elem*)pool_alloc(hash->elems_pool);
|
|
if(hash_elem)
|
|
{
|
|
hash_elem->key = key;
|
|
hash_elem->key_len = key_len;
|
|
hash_elem->next = hash->array[hashed];
|
|
|
|
#ifdef HASH_STAT
|
|
if(hash_elem->next)
|
|
{
|
|
hash->collisions += 1;
|
|
hash->cost += cost;
|
|
}
|
|
#endif
|
|
hash->array[hashed] = hash_elem;
|
|
hash->used += 1;
|
|
if(hash->used > hash->load_limit)
|
|
{
|
|
hash_resize(hash);
|
|
}
|
|
}
|
|
return TRUE;
|
|
}
|
|
return FALSE;
|
|
}
|
|
|
|
static int file_stat(const char* name, struct stat* buffer_stat, int* rc)
|
|
{
|
|
int rc_local = stat(name, buffer_stat);
|
|
if (rc_local < 0)
|
|
{
|
|
*rc = errno;
|
|
}
|
|
return rc_local;
|
|
}
|
|
|
|
static off_t file_get_size(const char* name, int* rc)
|
|
{
|
|
struct stat buffer_stat;
|
|
off_t size = -1;
|
|
|
|
if (!file_stat(name, &buffer_stat, rc))
|
|
{
|
|
if(S_ISREG(buffer_stat.st_mode))
|
|
{
|
|
size = buffer_stat.st_size;
|
|
}
|
|
else
|
|
{
|
|
*rc = EINVAL;
|
|
}
|
|
}
|
|
return size;
|
|
}
|
|
|
|
#if !ENABLE_RUNTIME_OPTIMIZATIONS
|
|
static void * file_load_buffers[100000];
|
|
static size_t file_load_buffer_count = 0;
|
|
#endif
|
|
|
|
static char* file_load(const char* name, off_t* size, int* return_rc)
|
|
{
|
|
off_t local_size = 0;
|
|
int rc = 0;
|
|
char* buffer = NULL;
|
|
int fd;
|
|
|
|
assert(name != NULL);
|
|
|
|
if(!size)
|
|
{
|
|
size = &local_size;
|
|
}
|
|
*size = file_get_size(name, &rc);
|
|
if (!rc && *size >= 0)
|
|
{
|
|
fd = open(name, FILE_O_RDONLY | FILE_O_BINARY);
|
|
if (!(fd == -1))
|
|
{
|
|
buffer = (char*)malloc((size_t)(*size + 1));
|
|
#if !ENABLE_RUNTIME_OPTIMIZATIONS
|
|
if (buffer != NULL)
|
|
{
|
|
if (file_load_buffer_count == 100000)
|
|
{
|
|
free(buffer);
|
|
buffer = NULL;
|
|
}
|
|
else
|
|
{
|
|
file_load_buffers[file_load_buffer_count++] = buffer;
|
|
}
|
|
}
|
|
#endif
|
|
if (buffer == NULL)
|
|
{
|
|
rc = ENOMEM;
|
|
}
|
|
else
|
|
{
|
|
ssize_t i;
|
|
|
|
REDO:
|
|
i = read(fd, buffer, (size_t)(*size));
|
|
if(i == -1)
|
|
{
|
|
if(errno == EINTR)
|
|
{
|
|
goto REDO;
|
|
}
|
|
else
|
|
{
|
|
rc = errno;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if (i != *size)
|
|
{
|
|
rc = EIO;
|
|
}
|
|
}
|
|
buffer[*size] = 0;
|
|
}
|
|
close(fd);
|
|
}
|
|
}
|
|
|
|
if(rc && buffer)
|
|
{
|
|
free(buffer);
|
|
buffer = NULL;
|
|
}
|
|
if(return_rc)
|
|
{
|
|
*return_rc = rc;
|
|
}
|
|
return buffer;
|
|
}
|
|
|
|
static void cancel_relative(char const * base, char** ref_cursor, char** ref_cursor_out, char const * end)
|
|
{
|
|
char* cursor = *ref_cursor;
|
|
char* cursor_out = *ref_cursor_out;
|
|
|
|
do
|
|
{
|
|
cursor += 3;
|
|
while(cursor_out > base && cursor_out[-1] == '/')
|
|
cursor_out--;
|
|
while(cursor_out > base && *--cursor_out != '/');
|
|
}
|
|
while(cursor + 3 < end && !memcmp(cursor, "/../", 4));
|
|
*ref_cursor = cursor;
|
|
*ref_cursor_out = cursor_out;
|
|
}
|
|
|
|
static void eat_space(char ** token)
|
|
{
|
|
while ((' ' == **token) || ('\t' == **token)) {
|
|
++(*token);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Prune LibreOffice specific duplicate dependencies to improve
|
|
* gnumake startup time, and shrink the disk-space footprint.
|
|
*/
|
|
static int
|
|
elide_dependency(const char* key, int key_len, const char **unpacked_end)
|
|
{
|
|
#if 0
|
|
{
|
|
int i;
|
|
fprintf (stderr, "elide?%d!: '", internal_boost);
|
|
for (i = 0; i < key_len; i++) {
|
|
fprintf (stderr, "%c", key[i]);
|
|
}
|
|
fprintf (stderr, "'\n");
|
|
}
|
|
#endif
|
|
|
|
/* boost brings a plague of header files */
|
|
int i;
|
|
int unpacked = 0;
|
|
/* walk down path elements */
|
|
for (i = 0; i < key_len - 1; i++)
|
|
{
|
|
if (key[i] == '/')
|
|
{
|
|
if (0 == unpacked)
|
|
{
|
|
if (!PATHNCMP(key + i + 1, "workdir/", 8))
|
|
{
|
|
unpacked = 1;
|
|
continue;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if (!PATHNCMP(key + i + 1, "UnpackedTarball/", 16))
|
|
{
|
|
if (unpacked_end)
|
|
*unpacked_end = strchr(key + i + 17, '/');
|
|
return 1;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* We collapse tens of internal boost headers to the unpacked target, such
|
|
* that you can re-compile / install boost and all is well.
|
|
*/
|
|
static void emit_single_boost_header(void)
|
|
{
|
|
#define BOOST_TARGET "/UnpackedTarball/boost.done"
|
|
fprintf(stdout, "%s" BOOST_TARGET " ", work_dir);
|
|
}
|
|
|
|
static void emit_unpacked_target(const char* token, const char* end)
|
|
{
|
|
fwrite(token, 1, end-token, stdout);
|
|
fputs(".done ", stdout);
|
|
}
|
|
|
|
/* prefix paths to absolute */
|
|
static void print_fullpaths(char* line)
|
|
{
|
|
char* token;
|
|
char* end;
|
|
int boost_count = 0;
|
|
int token_len;
|
|
const char * unpacked_end = NULL; /* end of UnpackedTarget match (if any) */
|
|
/* for UnpackedTarget the target is GenC{,xx}Object, don't mangle! */
|
|
int target_seen = 0;
|
|
|
|
token = line;
|
|
eat_space(&token);
|
|
while (*token)
|
|
{
|
|
end = token;
|
|
/* hard to believe that in this day and age drive letters still exist */
|
|
if (*end && (':' == *(end+1)) &&
|
|
(('\\' == *(end+2)) || ('/' == *(end+2))) &&
|
|
isalpha((unsigned char)*end))
|
|
{
|
|
end = end + 3; /* only one cross, err drive letter per filename */
|
|
}
|
|
while (*end && (' ' != *end) && ('\t' != *end) && (':' != *end)) {
|
|
++end;
|
|
}
|
|
token_len = end - token;
|
|
if (target_seen &&
|
|
elide_dependency(token, token_len, &unpacked_end))
|
|
{
|
|
if (unpacked_end)
|
|
{
|
|
if (internal_boost && !PATHNCMP(unpacked_end - 5, "boost", 5))
|
|
{
|
|
++boost_count;
|
|
if (boost_count == 1)
|
|
emit_single_boost_header();
|
|
else
|
|
{
|
|
/* don't output, and swallow trailing \\\n if any */
|
|
token = end;
|
|
eat_space(&token);
|
|
if (token[0] == '\\' && token[1] == '\n')
|
|
end = token + 2;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
emit_unpacked_target(token, unpacked_end);
|
|
}
|
|
unpacked_end = NULL;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if (fwrite(token, token_len, 1, stdout) != 1)
|
|
abort();
|
|
fputc(' ', stdout);
|
|
}
|
|
token = end;
|
|
eat_space(&token);
|
|
if (!target_seen && ':' == *token)
|
|
{
|
|
target_seen = 1;
|
|
fputc(':', stdout);
|
|
++token;
|
|
eat_space(&token);
|
|
}
|
|
}
|
|
}
|
|
|
|
static char * eat_space_at_end(char * end)
|
|
{
|
|
char * real_end;
|
|
assert('\0' == *end);
|
|
real_end = end - 1;
|
|
while (' ' == *real_end || '\t' == *real_end || '\n' == *real_end
|
|
|| ':' == *real_end)
|
|
{ /* eat colon and whitespace at end */
|
|
--real_end;
|
|
}
|
|
return real_end;
|
|
}
|
|
|
|
static char* phony_content_buffer;
|
|
static char* generate_phony_line(char const * phony_target, char const * extension)
|
|
{
|
|
char const * src;
|
|
char* dest;
|
|
char* last_dot = NULL;
|
|
//fprintf(stderr, "generate_phony_line called with phony_target %s and extension %s\n", phony_target, extension);
|
|
for(dest = phony_content_buffer+work_dir_len+1, src = phony_target; *src != 0; ++src, ++dest)
|
|
{
|
|
*dest = *src;
|
|
if(*dest == '.')
|
|
{
|
|
last_dot = dest;
|
|
}
|
|
}
|
|
//fprintf(stderr, "generate_phony_line after phony_target copy: %s\n", phony_content_buffer);
|
|
for(dest = last_dot+1, src = extension; *src != 0; ++src, ++dest)
|
|
{
|
|
*dest = *src;
|
|
}
|
|
//fprintf(stderr, "generate_phony_line after extension add: %s\n", phony_content_buffer);
|
|
strcpy(dest, ": $(gb_Helper_PHONY)\n");
|
|
//fprintf(stderr, "generate_phony_line after phony add: %s\n", phony_content_buffer);
|
|
return phony_content_buffer;
|
|
}
|
|
|
|
static int generate_phony_file(char* fn, char const * content)
|
|
{
|
|
FILE* depfile;
|
|
depfile = fopen(fn, "w");
|
|
if(!depfile)
|
|
{
|
|
fprintf(stderr, "Could not open '%s' for writing: %s\n", fn, strerror(errno));
|
|
}
|
|
else
|
|
{
|
|
fputs(content, depfile);
|
|
fclose(depfile);
|
|
}
|
|
return !depfile;
|
|
}
|
|
|
|
static int process(struct hash* dep_hash, char* fn)
|
|
{
|
|
int rc;
|
|
char* buffer;
|
|
char* end;
|
|
char* cursor;
|
|
char* cursor_out;
|
|
char* base;
|
|
char* created_line = NULL;
|
|
char* src_relative;
|
|
int continuation = 0;
|
|
char last_ns = 0;
|
|
off_t size;
|
|
|
|
buffer = file_load(fn, &size, &rc);
|
|
if(!rc)
|
|
{
|
|
base = cursor_out = cursor = end = buffer;
|
|
end += size;
|
|
|
|
/* first eat unneeded space at the beginning of file
|
|
*/
|
|
while(cursor < end && (*cursor == ' ' || *cursor == '\\'))
|
|
++cursor;
|
|
|
|
while(cursor < end)
|
|
{
|
|
if(*cursor == '\\')
|
|
{
|
|
continuation = 1;
|
|
*cursor_out++ = *cursor++;
|
|
}
|
|
else if(*cursor == '/')
|
|
{
|
|
if(cursor + 2 < end)
|
|
{
|
|
if(!memcmp(cursor, "/./", 3))
|
|
{
|
|
cursor += 2;
|
|
continue;
|
|
}
|
|
}
|
|
if(cursor + 3 < end)
|
|
{
|
|
if(!memcmp(cursor, "/../", 4))
|
|
{
|
|
cancel_relative(base, &cursor, &cursor_out, end);
|
|
}
|
|
}
|
|
*cursor_out++ = *cursor++;
|
|
}
|
|
else if(*cursor == '\n')
|
|
{
|
|
if(!continuation)
|
|
{
|
|
*cursor_out = 0;
|
|
if(base < cursor)
|
|
{
|
|
/* here we have a complete rule */
|
|
if(last_ns == ':')
|
|
{
|
|
/* if the rule ended in ':' that is a no-dep rule
|
|
* these are the one for which we want to filter
|
|
* duplicate out
|
|
*/
|
|
int key_len = eat_space_at_end(cursor_out) - base;
|
|
if (!elide_dependency(base,key_len + 1, NULL)
|
|
&& hash_store(dep_hash, base, key_len))
|
|
{
|
|
/* DO NOT modify base after it has been added
|
|
as key by hash_store */
|
|
print_fullpaths(base);
|
|
putc('\n', stdout);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
/* rule with dep, just write it */
|
|
print_fullpaths(base);
|
|
putc('\n', stdout);
|
|
}
|
|
last_ns = ' '; // cannot hurt to reset it
|
|
}
|
|
cursor += 1;
|
|
base = cursor_out = cursor;
|
|
}
|
|
else
|
|
{
|
|
/* here we have a '\' followed by \n this is a continuation
|
|
* i.e not a complete rule yet
|
|
*/
|
|
*cursor_out++ = *cursor++;
|
|
continuation = 0; // cancel current one (empty lines!)
|
|
}
|
|
}
|
|
else
|
|
{
|
|
continuation = 0;
|
|
/* not using isspace() here save 25% of I refs and 75% of D refs based on cachegrind */
|
|
if(*cursor != ' ' && *cursor != '\n' && *cursor != '\t' )
|
|
{
|
|
last_ns = *cursor;
|
|
}
|
|
*cursor_out++ = *cursor++;
|
|
}
|
|
}
|
|
|
|
/* just in case the file did not end with a \n, there may be a pending rule */
|
|
if(base < cursor_out)
|
|
{
|
|
if(last_ns == ':')
|
|
{
|
|
int key_len = eat_space_at_end(cursor_out) - base;
|
|
if (!elide_dependency(base,key_len + 1, NULL) &&
|
|
hash_store(dep_hash, base, key_len))
|
|
{
|
|
puts(base);
|
|
putc('\n', stdout);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
puts(base);
|
|
putc('\n', stdout);
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if(strncmp(fn, work_dir, work_dir_len) == 0)
|
|
{
|
|
if(strncmp(fn+work_dir_len, "/Dep/", 5) == 0)
|
|
{
|
|
src_relative = fn+work_dir_len+5;
|
|
// cases ordered by frequency
|
|
if(strncmp(src_relative, "CxxObject/", 10) == 0)
|
|
{
|
|
created_line = generate_phony_line(src_relative, "o");
|
|
rc = generate_phony_file(fn, created_line);
|
|
}
|
|
else if(strncmp(src_relative, "GenCxxObject/", 13) == 0)
|
|
{
|
|
created_line = generate_phony_line(src_relative, "o");
|
|
rc = generate_phony_file(fn, created_line);
|
|
}
|
|
else if(strncmp(src_relative, "CObject/", 8) == 0)
|
|
{
|
|
created_line = generate_phony_line(src_relative, "o");
|
|
rc = generate_phony_file(fn, created_line);
|
|
}
|
|
else if(strncmp(src_relative, "GenCObject/", 11) == 0)
|
|
{
|
|
created_line = generate_phony_line(src_relative, "o");
|
|
rc = generate_phony_file(fn, created_line);
|
|
}
|
|
else if(strncmp(src_relative, "SdiObject/", 10) == 0)
|
|
{
|
|
created_line = generate_phony_line(src_relative, "o");
|
|
rc = generate_phony_file(fn, created_line);
|
|
}
|
|
else if(strncmp(src_relative, "AsmObject/", 10) == 0)
|
|
{
|
|
created_line = generate_phony_line(src_relative, "o");
|
|
rc = generate_phony_file(fn, created_line);
|
|
}
|
|
else if(strncmp(src_relative, "ObjCxxObject/", 13) == 0)
|
|
{
|
|
created_line = generate_phony_line(src_relative, "o");
|
|
rc = generate_phony_file(fn, created_line);
|
|
}
|
|
else if(strncmp(src_relative, "ObjCObject/", 11) == 0)
|
|
{
|
|
created_line = generate_phony_line(src_relative, "o");
|
|
rc = generate_phony_file(fn, created_line);
|
|
}
|
|
else if(strncmp(src_relative, "GenObjCxxObject/", 16) == 0)
|
|
{
|
|
created_line = generate_phony_line(src_relative, "o");
|
|
rc = generate_phony_file(fn, created_line);
|
|
}
|
|
else if(strncmp(src_relative, "GenObjCObject/", 14) == 0)
|
|
{
|
|
created_line = generate_phony_line(src_relative, "o");
|
|
rc = generate_phony_file(fn, created_line);
|
|
}
|
|
else if(strncmp(src_relative, "GenNasmObject/", 14) == 0)
|
|
{
|
|
created_line = generate_phony_line(src_relative, "o");
|
|
rc = generate_phony_file(fn, created_line);
|
|
}
|
|
else if(strncmp(src_relative, "CxxClrObject/", 13) == 0)
|
|
{
|
|
created_line = generate_phony_line(src_relative, "o");
|
|
rc = generate_phony_file(fn, created_line);
|
|
}
|
|
else if(strncmp(src_relative, "GenCxxClrObject/", 16) == 0)
|
|
{
|
|
created_line = generate_phony_line(src_relative, "o");
|
|
rc = generate_phony_file(fn, created_line);
|
|
}
|
|
else
|
|
{
|
|
fprintf(stderr, "no magic for %s(%s) in %s\n", fn, src_relative, work_dir);
|
|
}
|
|
}
|
|
if(!rc)
|
|
{
|
|
puts(created_line);
|
|
}
|
|
}
|
|
}
|
|
/* Note: yes we are going to leak 'buffer'
|
|
* this is on purpose, to avoid cloning the 'key' out of it and our special
|
|
* 'hash' just store the pointer to the key inside of buffer, hence it need
|
|
* to remain allocated
|
|
*/
|
|
// coverity[leaked_storage] - this is on purpose
|
|
return rc;
|
|
}
|
|
|
|
static void usage(void)
|
|
{
|
|
fputs("Usage: concat-deps <file that contains dep_files>\n", stderr);
|
|
}
|
|
|
|
#define kDEFAULT_HASH_SIZE 4096
|
|
#define PHONY_TARGET_BUFFER 4096
|
|
|
|
static int get_var(char **var, const char *name)
|
|
{
|
|
*var = (char *)getenv(name);
|
|
if(!*var)
|
|
{
|
|
fprintf(stderr,"Error: %s is missing in the environment\n", name);
|
|
return 1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
int main(int argc, char** argv)
|
|
{
|
|
int rc = 0;
|
|
off_t in_list_size = 0;
|
|
char* in_list;
|
|
char* in_list_cursor;
|
|
char* in_list_base;
|
|
struct hash* dep_hash = NULL;
|
|
const char *env_str;
|
|
|
|
if(argc < 2)
|
|
{
|
|
usage();
|
|
return 1;
|
|
}
|
|
if(get_var(&base_dir, "SRCDIR") || get_var(&work_dir, "WORKDIR"))
|
|
return 1;
|
|
work_dir_len = strlen(work_dir);
|
|
phony_content_buffer = (char*)malloc(PHONY_TARGET_BUFFER);
|
|
assert(phony_content_buffer); // Don't handle OOM conditions
|
|
strcpy(phony_content_buffer, work_dir);
|
|
phony_content_buffer[work_dir_len] = '/';
|
|
|
|
env_str = getenv("SYSTEM_BOOST");
|
|
internal_boost = !env_str || strcmp(env_str,"TRUE");
|
|
|
|
in_list = file_load(argv[1], &in_list_size, &rc);
|
|
if(!rc)
|
|
{
|
|
dep_hash = hash_create( kDEFAULT_HASH_SIZE);
|
|
in_list_base = in_list_cursor = in_list;
|
|
|
|
/* extract filename of dep file from a 'space' separated list */
|
|
while(*in_list_cursor)
|
|
{
|
|
/* the input here may contain Win32 \r\n EOL */
|
|
if(*in_list_cursor == ' '
|
|
|| *in_list_cursor == '\n' || *in_list_cursor == '\r')
|
|
{
|
|
*in_list_cursor = 0;
|
|
if(in_list_base < in_list_cursor)
|
|
{
|
|
rc = process(dep_hash, in_list_base);
|
|
if(rc)
|
|
{
|
|
break;
|
|
}
|
|
}
|
|
in_list_cursor += 1;
|
|
in_list_base = in_list_cursor;
|
|
}
|
|
else
|
|
{
|
|
in_list_cursor += 1;
|
|
}
|
|
}
|
|
if(!rc)
|
|
{
|
|
/* catch the last entry in case the input did not terminate with a 'space' */
|
|
if(in_list_base < in_list_cursor)
|
|
{
|
|
rc = process(dep_hash, in_list_base);
|
|
}
|
|
}
|
|
#ifdef HASH_STAT
|
|
fprintf(stderr, "stats: u:%d s:%d l:%d t:%d c:%d m:%d $:%d\n",
|
|
dep_hash->used, dep_hash->size, dep_hash->load_limit, dep_hash->stored,
|
|
dep_hash->collisions, dep_hash->memcmp, dep_hash->cost);
|
|
#endif
|
|
}
|
|
#if !ENABLE_RUNTIME_OPTIMIZATIONS
|
|
{
|
|
size_t i;
|
|
hash_destroy(dep_hash);
|
|
for (i = 0; i != file_load_buffer_count; ++i)
|
|
{
|
|
free(file_load_buffers[i]);
|
|
}
|
|
}
|
|
#endif
|
|
return rc;
|
|
}
|
|
|
|
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
|