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office-gobmx/sal/osl/unx/thread.cxx
Stephan Bergmann 4663c56edf -Werror=calloc-transposed-args 
Change-Id: I7b8b020bdbcd5b4db4cb478cc5fe1225f19ae0cf
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/161268
Tested-by: Jenkins
Reviewed-by: Stephan Bergmann <stephan.bergmann@allotropia.de>
2023-12-24 14:16:45 +01:00

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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you under the Apache
* License, Version 2.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.apache.org/licenses/LICENSE-2.0 .
*/
#include <sal/config.h>
#include <cassert>
#include <functional>
#include <mutex>
#include <unistd.h>
#include "system.hxx"
#include "unixerrnostring.hxx"
#include <thread_internal.hxx>
#include <string.h>
#if defined(OPENBSD)
#include <sched.h>
#endif
#ifdef __FreeBSD__
#if __FreeBSD_version <= 1201517
#include <pthread_np.h>
#define pthread_setname_np pthread_set_name_np
#endif
#endif
#include <config_options.h>
#include <o3tl/safeint.hxx>
#include <osl/thread.h>
#include <osl/nlsupport.h>
#include <rtl/textenc.h>
#include <sal/log.hxx>
#include <sal/macros.h>
#ifdef ANDROID
#include <jni.h>
#include <android/log.h>
#include <osl/detail/android-bootstrap.h>
#endif
#if defined LINUX && ! defined __FreeBSD_kernel__
#include <sys/syscall.h>
#endif
/****************************************************************************
* @@@ TODO @@@
*
* (1) 'osl_thread_priority_init_Impl()'
* - insane assumption that initializing caller is main thread
* - use _POSIX_THREAD_PRIORITY_SCHEDULING, not NO_PTHREAD_PRIORITY (?)
* - POSIX doesn't require defined prio's for SCHED_OTHER (!)
* - use SCHED_RR instead of SCHED_OTHER for defined behaviour (?)
* (2) 'oslThreadIdentifier' and '{insert|remove|lookup}ThreadId()'
* - cannot reliably be applied to 'alien' threads;
* - memory leak for 'alien' thread 'HashEntry's;
* - use 'reinterpret_cast<unsigned long>(pthread_t)' as identifier
* instead (?)
* - if yes, change 'oslThreadIdentifier' to 'intptr_t' or similar
* (3) 'oslSigAlarmHandler()' (#71232#)
* - [Under Solaris we get SIGALRM in e.g. pthread_join which terminates
* the process. So we initialize our signal handling module and do
* register a SIGALRM Handler which catches and ignores it]
* - should this still happen, 'signal.c' needs to be fixed instead.
*
****************************************************************************/
#define THREADIMPL_FLAGS_TERMINATE 0x00001
#define THREADIMPL_FLAGS_STARTUP 0x00002
#define THREADIMPL_FLAGS_SUSPENDED 0x00004
#define THREADIMPL_FLAGS_ACTIVE 0x00008
#define THREADIMPL_FLAGS_ATTACHED 0x00010
#define THREADIMPL_FLAGS_DESTROYED 0x00020
namespace {
typedef struct osl_thread_impl_st
{
pthread_t m_hThread;
oslThreadIdentifier m_Ident; /* @@@ see TODO @@@ */
short m_Flags;
oslWorkerFunction m_WorkerFunction;
void* m_pData;
pthread_mutex_t m_Lock;
pthread_cond_t m_Cond;
} Thread_Impl;
#if !defined NO_PTHREAD_PRIORITY
struct osl_thread_priority_st
{
int m_Highest;
int m_Above_Normal;
int m_Normal;
int m_Below_Normal;
int m_Lowest;
};
#define OSL_THREAD_PRIORITY_INITIALIZER { 127, 96, 64, 32, 0 }
#endif
}
#if !defined NO_PTHREAD_PRIORITY
namespace {
struct osl_thread_global_st
{
pthread_once_t m_once;
struct osl_thread_priority_st m_priority;
};
}
static struct osl_thread_global_st g_thread =
{
PTHREAD_ONCE_INIT,
OSL_THREAD_PRIORITY_INITIALIZER
};
#endif // !defined NO_PTHREAD_PRIORITY
static Thread_Impl* osl_thread_construct_Impl();
static void osl_thread_destruct_Impl (Thread_Impl ** ppImpl);
static void* osl_thread_start_Impl (void * pData);
static void osl_thread_cleanup_Impl (Thread_Impl * pImpl);
static oslThread osl_thread_create_Impl (
oslWorkerFunction pWorker, void * pThreadData, short nFlags);
/* @@@ see TODO @@@ */
static oslThreadIdentifier insertThreadId (pthread_t hThread);
static oslThreadIdentifier lookupThreadId (pthread_t hThread);
static void removeThreadId (pthread_t hThread);
Thread_Impl* osl_thread_construct_Impl()
{
Thread_Impl* pImpl = new Thread_Impl;
memset (pImpl, 0, sizeof(Thread_Impl));
pthread_mutex_init (&(pImpl->m_Lock), PTHREAD_MUTEXATTR_DEFAULT);
pthread_cond_init (&(pImpl->m_Cond), PTHREAD_CONDATTR_DEFAULT);
return pImpl;
}
static void osl_thread_destruct_Impl (Thread_Impl ** ppImpl)
{
assert(ppImpl);
if (*ppImpl)
{
pthread_cond_destroy (&((*ppImpl)->m_Cond));
pthread_mutex_destroy (&((*ppImpl)->m_Lock));
delete *ppImpl;
(*ppImpl) = nullptr;
}
}
static void osl_thread_cleanup_Impl (Thread_Impl * pImpl)
{
pthread_t thread;
bool attached;
bool destroyed;
pthread_mutex_lock (&(pImpl->m_Lock));
thread = pImpl->m_hThread;
attached = (pImpl->m_Flags & THREADIMPL_FLAGS_ATTACHED) != 0;
destroyed = (pImpl->m_Flags & THREADIMPL_FLAGS_DESTROYED) != 0;
pImpl->m_Flags &= ~(THREADIMPL_FLAGS_ACTIVE | THREADIMPL_FLAGS_ATTACHED);
pthread_mutex_unlock (&(pImpl->m_Lock));
/* release oslThreadIdentifier @@@ see TODO @@@ */
removeThreadId (thread);
if (attached)
{
pthread_detach (thread);
}
if (destroyed)
{
osl_thread_destruct_Impl (&pImpl);
}
}
static void* osl_thread_start_Impl (void* pData)
{
bool terminate;
Thread_Impl* pImpl= static_cast<Thread_Impl*>(pData);
assert(pImpl);
pthread_mutex_lock (&(pImpl->m_Lock));
/* request oslThreadIdentifier @@@ see TODO @@@ */
pImpl->m_Ident = insertThreadId (pImpl->m_hThread);
/* signal change from STARTUP to ACTIVE state */
pImpl->m_Flags &= ~THREADIMPL_FLAGS_STARTUP;
pImpl->m_Flags |= THREADIMPL_FLAGS_ACTIVE;
pthread_cond_signal (&(pImpl->m_Cond));
/* Check if thread is started in SUSPENDED state */
while (pImpl->m_Flags & THREADIMPL_FLAGS_SUSPENDED)
{
/* wait until SUSPENDED flag is cleared */
pthread_cond_wait (&(pImpl->m_Cond), &(pImpl->m_Lock));
}
/* check for SUSPENDED to TERMINATE state change */
terminate = ((pImpl->m_Flags & THREADIMPL_FLAGS_TERMINATE) > 0);
pthread_mutex_unlock (&(pImpl->m_Lock));
if (!terminate)
{
#ifdef ANDROID
JNIEnv* env = 0;
int res = (*lo_get_javavm()).AttachCurrentThread(&env, NULL);
__android_log_print(ANDROID_LOG_INFO, "LibreOffice", "New sal thread started and attached res=%d", res);
#endif
/* call worker function */
pImpl->m_WorkerFunction(pImpl->m_pData);
#ifdef ANDROID
res = (*lo_get_javavm()).DetachCurrentThread();
__android_log_print(ANDROID_LOG_INFO, "LibreOffice", "Detached finished sal thread res=%d", res);
#endif
}
osl_thread_cleanup_Impl (pImpl);
return nullptr;
}
static oslThread osl_thread_create_Impl (
oslWorkerFunction pWorker,
void* pThreadData,
short nFlags)
{
Thread_Impl* pImpl;
#if defined OPENBSD || defined MACOSX || (defined LINUX && !ENABLE_RUNTIME_OPTIMIZATIONS)
pthread_attr_t attr;
size_t stacksize;
#endif
int nRet=0;
pImpl = osl_thread_construct_Impl();
if (!pImpl)
return nullptr; /* ENOMEM */
pImpl->m_WorkerFunction = pWorker;
pImpl->m_pData = pThreadData;
pImpl->m_Flags = nFlags | THREADIMPL_FLAGS_STARTUP;
pthread_mutex_lock (&(pImpl->m_Lock));
#if defined OPENBSD || defined MACOSX || (defined LINUX && !ENABLE_RUNTIME_OPTIMIZATIONS)
if (pthread_attr_init(&attr) != 0)
return nullptr;
#if defined OPENBSD
stacksize = 262144;
#elif !ENABLE_RUNTIME_OPTIMIZATIONS
stacksize = 12 * 1024 * 1024; // 8MB is not enough for ASAN on x86-64
#else
stacksize = 1 * 1024 * 1024; // macOS default for non-main threads (512kB) is not enough...
#endif
if (pthread_attr_setstacksize(&attr, stacksize) != 0) {
pthread_attr_destroy(&attr);
return nullptr;
}
#endif
if ((nRet = pthread_create (
&(pImpl->m_hThread),
#if defined OPENBSD || defined MACOSX || (defined LINUX && !ENABLE_RUNTIME_OPTIMIZATIONS)
&attr,
#else
PTHREAD_ATTR_DEFAULT,
#endif
osl_thread_start_Impl,
static_cast<void*>(pImpl))) != 0)
{
SAL_WARN(
"sal.osl",
"pthread_create failed: " << UnixErrnoString(nRet));
pthread_mutex_unlock (&(pImpl->m_Lock));
osl_thread_destruct_Impl (&pImpl);
return nullptr;
}
#if defined OPENBSD || defined MACOSX || (defined LINUX && !ENABLE_RUNTIME_OPTIMIZATIONS)
pthread_attr_destroy(&attr);
#endif
/* wait for change from STARTUP to ACTIVE state */
while (pImpl->m_Flags & THREADIMPL_FLAGS_STARTUP)
{
/* wait until STARTUP flag is cleared */
pthread_cond_wait (&(pImpl->m_Cond), &(pImpl->m_Lock));
}
pthread_mutex_unlock (&(pImpl->m_Lock));
return static_cast<oslThread>(pImpl);
}
oslThread osl_createThread (
oslWorkerFunction pWorker,
void * pThreadData)
{
return osl_thread_create_Impl (
pWorker,
pThreadData,
THREADIMPL_FLAGS_ATTACHED);
}
oslThread osl_createSuspendedThread (
oslWorkerFunction pWorker,
void * pThreadData)
{
return osl_thread_create_Impl (
pWorker,
pThreadData,
THREADIMPL_FLAGS_ATTACHED |
THREADIMPL_FLAGS_SUSPENDED );
}
void SAL_CALL osl_destroyThread(oslThread Thread)
{
if (Thread != nullptr) {
Thread_Impl * impl = static_cast<Thread_Impl *>(Thread);
bool active;
pthread_mutex_lock(&impl->m_Lock);
active = (impl->m_Flags & THREADIMPL_FLAGS_ACTIVE) != 0;
impl->m_Flags |= THREADIMPL_FLAGS_DESTROYED;
pthread_mutex_unlock(&impl->m_Lock);
if (!active) {
osl_thread_destruct_Impl(&impl);
}
}
}
void SAL_CALL osl_resumeThread(oslThread Thread)
{
Thread_Impl* pImpl= static_cast<Thread_Impl*>(Thread);
if (!pImpl)
{
SAL_WARN("sal.osl", "invalid osl_resumeThread(nullptr) call");
return; /* EINVAL */
}
pthread_mutex_lock (&(pImpl->m_Lock));
if (pImpl->m_Flags & THREADIMPL_FLAGS_SUSPENDED)
{
/* clear SUSPENDED flag */
pImpl->m_Flags &= ~THREADIMPL_FLAGS_SUSPENDED;
pthread_cond_signal (&(pImpl->m_Cond));
}
pthread_mutex_unlock (&(pImpl->m_Lock));
}
void SAL_CALL osl_suspendThread(oslThread Thread)
{
Thread_Impl* pImpl= static_cast<Thread_Impl*>(Thread);
if (!pImpl)
{
SAL_WARN("sal.osl", "invalid osl_suspendThread(nullptr) call");
return; /* EINVAL */
}
pthread_mutex_lock (&(pImpl->m_Lock));
pImpl->m_Flags |= THREADIMPL_FLAGS_SUSPENDED;
if (pthread_equal (pthread_self(), pImpl->m_hThread))
{
/* self suspend */
while (pImpl->m_Flags & THREADIMPL_FLAGS_SUSPENDED)
{
/* wait until SUSPENDED flag is cleared */
pthread_cond_wait (&(pImpl->m_Cond), &(pImpl->m_Lock));
}
}
pthread_mutex_unlock (&(pImpl->m_Lock));
}
sal_Bool SAL_CALL osl_isThreadRunning(const oslThread Thread)
{
bool active;
Thread_Impl* pImpl= static_cast<Thread_Impl*>(Thread);
if (!pImpl)
return false;
pthread_mutex_lock (&(pImpl->m_Lock));
active = ((pImpl->m_Flags & THREADIMPL_FLAGS_ACTIVE) > 0);
pthread_mutex_unlock (&(pImpl->m_Lock));
return active;
}
void SAL_CALL osl_joinWithThread(oslThread Thread)
{
Thread_Impl* pImpl= static_cast<Thread_Impl*>(Thread);
if (!pImpl)
return;
pthread_mutex_lock (&(pImpl->m_Lock));
pthread_t const thread = pImpl->m_hThread;
bool const attached = ((pImpl->m_Flags & THREADIMPL_FLAGS_ATTACHED) > 0);
/* check this only if *this* thread is still attached - if it's not,
then it could have terminated and another newly created thread could
have recycled the same id as m_hThread! */
if (attached && pthread_equal(pthread_self(), pImpl->m_hThread))
{
assert(false); /* Win32 implementation would deadlock here! */
/* self join */
pthread_mutex_unlock (&(pImpl->m_Lock));
return; /* EDEADLK */
}
pImpl->m_Flags &= ~THREADIMPL_FLAGS_ATTACHED;
pthread_mutex_unlock (&(pImpl->m_Lock));
if (attached)
{
pthread_join (thread, nullptr);
}
}
void SAL_CALL osl_terminateThread(oslThread Thread)
{
Thread_Impl* pImpl= static_cast<Thread_Impl*>(Thread);
if (!pImpl)
{
SAL_WARN("sal.osl", "invalid osl_terminateThread(nullptr) call");
return; /* EINVAL */
}
pthread_mutex_lock (&(pImpl->m_Lock));
if (pImpl->m_Flags & THREADIMPL_FLAGS_SUSPENDED)
{
/* clear SUSPENDED flag */
pImpl->m_Flags &= ~THREADIMPL_FLAGS_SUSPENDED;
pthread_cond_signal (&(pImpl->m_Cond));
}
pImpl->m_Flags |= THREADIMPL_FLAGS_TERMINATE;
pthread_mutex_unlock (&(pImpl->m_Lock));
}
sal_Bool SAL_CALL osl_scheduleThread(oslThread Thread)
{
bool terminate;
Thread_Impl* pImpl= static_cast<Thread_Impl*>(Thread);
if (!pImpl)
{
SAL_WARN("sal.osl", "invalid osl_scheduleThread(nullptr) call");
return false; /* EINVAL */
}
if (!(pthread_equal (pthread_self(), pImpl->m_hThread)))
{
SAL_WARN("sal.osl", "invalid osl_scheduleThread(non-self) call");
return false; /* EINVAL */
}
pthread_mutex_lock (&(pImpl->m_Lock));
while (pImpl->m_Flags & THREADIMPL_FLAGS_SUSPENDED)
{
/* wait until SUSPENDED flag is cleared */
pthread_cond_wait (&(pImpl->m_Cond), &(pImpl->m_Lock));
}
terminate = ((pImpl->m_Flags & THREADIMPL_FLAGS_TERMINATE) > 0);
pthread_mutex_unlock(&(pImpl->m_Lock));
return !terminate;
}
void SAL_CALL osl_waitThread(const TimeValue* pDelay)
{
if (pDelay)
{
struct timespec delay;
SET_TIMESPEC(delay, pDelay->Seconds, pDelay->Nanosec);
SLEEP_TIMESPEC(delay);
}
}
/** Yields thread
@attention Note that POSIX scheduling @em really requires threads to call this
function, since a thread only reschedules to other thread, when
it blocks (sleep, blocking I/O) OR calls sched_yield().
*/
void SAL_CALL osl_yieldThread()
{
sched_yield();
}
void SAL_CALL osl_setThreadName(char const * name)
{
assert( name );
#if defined LINUX && ! defined __FreeBSD_kernel__
const int LINUX_THREAD_NAME_MAXLEN = 15;
if ( strlen( name ) > LINUX_THREAD_NAME_MAXLEN )
SAL_INFO( "sal.osl", "osl_setThreadName truncated thread name to "
<< LINUX_THREAD_NAME_MAXLEN << " chars from name '"
<< name << "'" );
char shortname[ LINUX_THREAD_NAME_MAXLEN + 1 ];
shortname[ LINUX_THREAD_NAME_MAXLEN ] = '\0';
strncpy( shortname, name, LINUX_THREAD_NAME_MAXLEN );
int err = pthread_setname_np( pthread_self(), shortname );
if ( 0 != err )
SAL_WARN("sal.osl", "pthread_setname_np failed with errno " << err);
#elif defined __FreeBSD__
pthread_setname_np( pthread_self(), name );
#elif defined MACOSX || defined IOS
pthread_setname_np( name );
#else
(void) name;
#endif
}
/* osl_getThreadIdentifier @@@ see TODO @@@ */
namespace {
struct HashEntry
{
pthread_t Handle;
oslThreadIdentifier Ident;
HashEntry * Next;
};
}
static HashEntry* HashTable[31];
const int HashSize = SAL_N_ELEMENTS(HashTable);
static std::mutex HashLock;
#if ! ((defined LINUX && !defined __FreeBSD_kernel__) || defined MACOSX || defined IOS)
static oslThreadIdentifier LastIdent = 0;
#endif
namespace {
std::size_t HASHID(pthread_t x)
{ return std::hash<pthread_t>()(x) % HashSize; }
}
static oslThreadIdentifier lookupThreadId (pthread_t hThread)
{
HashEntry *pEntry;
std::unique_lock aGuard(HashLock);
pEntry = HashTable[HASHID(hThread)];
while (pEntry != nullptr)
{
if (pthread_equal(pEntry->Handle, hThread))
{
return pEntry->Ident;
}
pEntry = pEntry->Next;
}
return 0;
}
static oslThreadIdentifier insertThreadId (pthread_t hThread)
{
HashEntry *pEntry, *pInsert = nullptr;
std::unique_lock aGuard(HashLock);
pEntry = HashTable[HASHID(hThread)];
while (pEntry != nullptr)
{
if (pthread_equal(pEntry->Handle, hThread))
break;
pInsert = pEntry;
pEntry = pEntry->Next;
}
if (pEntry == nullptr)
{
pEntry = static_cast<HashEntry*>(calloc(1, sizeof(HashEntry)));
pEntry->Handle = hThread;
#if defined LINUX && ! defined __FreeBSD_kernel__
#if defined __GLIBC__ && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 30))
// gettid returns a pid_t, which POSIX defines to be a signed integer type; assume that all
// valid pid_t values on Linux are positive (zero is filtered out in the generic code
// below):
pid_t const tid = gettid();
assert(tid >= 0);
#else
long const tid = syscall(SYS_gettid);
if (tid < 0 || o3tl::make_unsigned(tid) > std::numeric_limits<sal_uInt32>::max()) {
std::abort();
}
#endif
pEntry->Ident = tid;
#elif defined MACOSX || defined IOS
// currently the value of pthread_threadid_np is the same then
// syscall(SYS_thread_selfid), which returns an int as the TID.
// may change, as the syscall interface was deprecated.
uint64_t mac_tid;
pthread_threadid_np(nullptr, &mac_tid);
if (mac_tid > SAL_MAX_UINT32)
std::abort();
pEntry->Ident = mac_tid;
#else
++LastIdent;
if (0 == LastIdent)
LastIdent = 1;
pEntry->Ident = LastIdent;
#endif
if (0 == pEntry->Ident)
std::abort();
if (pInsert)
pInsert->Next = pEntry;
else
HashTable[HASHID(hThread)] = pEntry;
}
return pEntry->Ident;
}
static void removeThreadId (pthread_t hThread)
{
HashEntry *pEntry, *pRemove = nullptr;
std::unique_lock aGuard(HashLock);
pEntry = HashTable[HASHID(hThread)];
while (pEntry != nullptr)
{
if (pthread_equal(pEntry->Handle, hThread))
break;
pRemove = pEntry;
pEntry = pEntry->Next;
}
if (pEntry != nullptr)
{
if (pRemove)
pRemove->Next = pEntry->Next;
else
HashTable[HASHID(hThread)] = pEntry->Next;
free(pEntry);
}
}
oslThreadIdentifier SAL_CALL osl_getThreadIdentifier(oslThread Thread)
{
Thread_Impl* pImpl= static_cast<Thread_Impl*>(Thread);
oslThreadIdentifier Ident;
if (pImpl)
Ident = pImpl->m_Ident;
else
{
/* current thread */
pthread_t current = pthread_self();
Ident = lookupThreadId (current);
if (Ident == 0)
/* @@@ see TODO: alien pthread_self() @@@ */
Ident = insertThreadId (current);
}
return Ident;
}
#ifndef NO_PTHREAD_PRIORITY
/*****************************************************************************
@@@ see TODO @@@
osl_thread_priority_init_Impl
set the base-priority of the main-thread to
oslThreadPriorityNormal (64) since 0 (lowest) is
the system default. This behaviour collides with
our enum-priority definition (highest..normal..lowest).
A normaluser will expect the main-thread of an app.
to have the "normal" priority.
*****************************************************************************/
static void osl_thread_priority_init_Impl()
{
struct sched_param param;
int policy=0;
int nRet=0;
/* @@@ see TODO: calling thread may not be main thread @@@ */
if ((nRet = pthread_getschedparam(pthread_self(), &policy, &param)) != 0)
{
SAL_WARN(
"sal.osl",
"pthread_getschedparam failed: " << UnixErrnoString(nRet));
return;
}
#if defined (__sun)
if ( policy >= _SCHED_NEXT)
{
/* mfe: pthread_getschedparam on Solaris has a possible Bug */
/* one gets 959917873 as the policy */
/* so set the policy to a default one */
policy=SCHED_OTHER;
}
#endif /* __sun */
if ((nRet = sched_get_priority_min(policy) ) != -1)
{
SAL_INFO(
"sal.osl", "Min Prioriy for policy " << policy << " == " << nRet);
g_thread.m_priority.m_Lowest=nRet;
}
else
{
int e = errno;
SAL_WARN(
"sal.osl",
"sched_get_priority_min failed: " << UnixErrnoString(e));
}
if ((nRet = sched_get_priority_max(policy) ) != -1)
{
SAL_INFO(
"sal.osl", "Max Prioriy for policy " << policy << " == " << nRet);
g_thread.m_priority.m_Highest=nRet;
}
else
{
int e = errno;
SAL_WARN(
"sal.osl",
"sched_get_priority_max failed: " << UnixErrnoString(e));
}
g_thread.m_priority.m_Normal =
(g_thread.m_priority.m_Lowest + g_thread.m_priority.m_Highest) / 2;
g_thread.m_priority.m_Below_Normal =
(g_thread.m_priority.m_Lowest + g_thread.m_priority.m_Normal) / 2;
g_thread.m_priority.m_Above_Normal =
(g_thread.m_priority.m_Normal + g_thread.m_priority.m_Highest) / 2;
/* @@@ set prio of calling (not main) thread (?) @@@ */
param.sched_priority= g_thread.m_priority.m_Normal;
if ((nRet = pthread_setschedparam(pthread_self(), policy, &param)) != 0)
{
SAL_WARN(
"sal.osl",
"pthread_setschedparam failed: " << UnixErrnoString(nRet));
SAL_INFO(
"sal.osl",
"Thread ID " << pthread_self() << ", Policy " << policy
<< ", Priority " << param.sched_priority);
}
}
#endif /* NO_PTHREAD_PRIORITY */
/**
Impl-Notes: contrary to solaris-docu, which claims
valid priority-levels from 0 .. INT_MAX, only the
range 0..127 is accepted. (0 lowest, 127 highest)
*/
void SAL_CALL osl_setThreadPriority (
oslThread Thread,
oslThreadPriority Priority)
{
#ifndef NO_PTHREAD_PRIORITY
struct sched_param Param;
int policy;
int nRet;
#endif /* NO_PTHREAD_PRIORITY */
Thread_Impl* pImpl= static_cast<Thread_Impl*>(Thread);
if (!pImpl)
{
SAL_WARN("sal.osl", "invalid osl_setThreadPriority(nullptr, ...) call");
return; /* EINVAL */
}
#ifdef NO_PTHREAD_PRIORITY
(void) Priority; /* unused */
#else /* NO_PTHREAD_PRIORITY */
if (pthread_getschedparam(pImpl->m_hThread, &policy, &Param) != 0)
return; /* ESRCH */
#if defined (__sun)
if ( policy >= _SCHED_NEXT)
{
/* mfe: pthread_getschedparam on Solaris has a possible Bug */
/* one gets 959917873 as the policy */
/* so set the policy to a default one */
policy=SCHED_OTHER;
}
#endif /* __sun */
pthread_once (&(g_thread.m_once), osl_thread_priority_init_Impl);
switch(Priority)
{
case osl_Thread_PriorityHighest:
Param.sched_priority= g_thread.m_priority.m_Highest;
break;
case osl_Thread_PriorityAboveNormal:
Param.sched_priority= g_thread.m_priority.m_Above_Normal;
break;
case osl_Thread_PriorityNormal:
Param.sched_priority= g_thread.m_priority.m_Normal;
break;
case osl_Thread_PriorityBelowNormal:
Param.sched_priority= g_thread.m_priority.m_Below_Normal;
break;
case osl_Thread_PriorityLowest:
Param.sched_priority= g_thread.m_priority.m_Lowest;
break;
case osl_Thread_PriorityUnknown:
SAL_WARN(
"sal.osl",
"invalid osl_setThreadPriority(..., osl_Thread_PriorityUnknown)"
" call");
return;
default:
SAL_WARN(
"sal.osl",
"invalid osl_setThreadPriority(..., " << Priority << ") call");
return;
}
if ((nRet = pthread_setschedparam(pImpl->m_hThread, policy, &Param)) != 0)
{
SAL_WARN(
"sal.osl",
"pthread_setschedparam failed: " << UnixErrnoString(nRet));
}
#endif /* NO_PTHREAD_PRIORITY */
}
oslThreadPriority SAL_CALL osl_getThreadPriority(const oslThread Thread)
{
#ifndef NO_PTHREAD_PRIORITY
struct sched_param Param;
int Policy;
#endif /* NO_PTHREAD_PRIORITY */
oslThreadPriority Priority = osl_Thread_PriorityNormal;
Thread_Impl* pImpl= static_cast<Thread_Impl*>(Thread);
if (!pImpl)
{
SAL_WARN("sal.osl", "invalid osl_getThreadPriority(nullptr) call");
return osl_Thread_PriorityUnknown; /* EINVAL */
}
#ifndef NO_PTHREAD_PRIORITY
if (pthread_getschedparam(pImpl->m_hThread, &Policy, &Param) != 0)
return osl_Thread_PriorityUnknown; /* ESRCH */
pthread_once (&(g_thread.m_once), osl_thread_priority_init_Impl);
/* map pthread priority to enum */
if (Param.sched_priority==g_thread.m_priority.m_Highest)
{
/* 127 - highest */
Priority= osl_Thread_PriorityHighest;
}
else if (Param.sched_priority > g_thread.m_priority.m_Normal)
{
/* 65..126 - above normal */
Priority= osl_Thread_PriorityAboveNormal;
}
else if (Param.sched_priority == g_thread.m_priority.m_Normal)
{
/* normal */
Priority= osl_Thread_PriorityNormal;
}
else if (Param.sched_priority > g_thread.m_priority.m_Lowest)
{
/* 63..1 -below normal */
Priority= osl_Thread_PriorityBelowNormal;
}
else if (Param.sched_priority == g_thread.m_priority.m_Lowest)
{
/* 0 - lowest */
Priority= osl_Thread_PriorityLowest;
}
else
{
/* unknown */
Priority= osl_Thread_PriorityUnknown;
}
#endif /* NO_PTHREAD_PRIORITY */
return Priority;
}
namespace {
struct wrapper_pthread_key
{
pthread_key_t m_key;
oslThreadKeyCallbackFunction pfnCallback;
};
}
oslThreadKey SAL_CALL osl_createThreadKey( oslThreadKeyCallbackFunction pCallback )
{
wrapper_pthread_key *pKey = static_cast<wrapper_pthread_key*>(malloc(sizeof(wrapper_pthread_key)));
if (pKey)
{
pKey->pfnCallback = pCallback;
if (pthread_key_create(&(pKey->m_key), pKey->pfnCallback) != 0)
{
free(pKey);
pKey = nullptr;
}
}
return static_cast<oslThreadKey>(pKey);
}
void SAL_CALL osl_destroyThreadKey(oslThreadKey Key)
{
wrapper_pthread_key *pKey = static_cast<wrapper_pthread_key*>(Key);
if (pKey)
{
pthread_key_delete(pKey->m_key);
free(pKey);
}
}
void* SAL_CALL osl_getThreadKeyData(oslThreadKey Key)
{
wrapper_pthread_key *pKey = static_cast<wrapper_pthread_key*>(Key);
return pKey ? pthread_getspecific(pKey->m_key) : nullptr;
}
sal_Bool SAL_CALL osl_setThreadKeyData(oslThreadKey Key, void *pData)
{
bool bRet;
void *pOldData = nullptr;
wrapper_pthread_key *pKey = static_cast<wrapper_pthread_key*>(Key);
if (!pKey)
return false;
if (pKey->pfnCallback)
pOldData = pthread_getspecific(pKey->m_key);
bRet = (pthread_setspecific(pKey->m_key, pData) == 0);
if (bRet && pKey->pfnCallback && pOldData)
pKey->pfnCallback(pOldData);
return bRet;
}
rtl_TextEncoding getThreadTextEncodingForInitialization()
{
/* determine default text encoding */
rtl_TextEncoding defaultEncoding = osl_getTextEncodingFromLocale(nullptr);
// Tools string functions call abort() on an unknown encoding so ASCII is a
// meaningful fallback:
if ( RTL_TEXTENCODING_DONTKNOW == defaultEncoding )
{
SAL_WARN("sal.osl", "RTL_TEXTENCODING_DONTKNOW -> _ASCII_US");
defaultEncoding = RTL_TEXTENCODING_ASCII_US;
}
return defaultEncoding;
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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