631 lines
13 KiB
C
631 lines
13 KiB
C
/**
|
|
* WinPR: Windows Portable Runtime
|
|
* Process Thread Functions
|
|
*
|
|
* Copyright 2012 Marc-Andre Moreau <marcandre.moreau@gmail.com>
|
|
*
|
|
* Licensed 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
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
#include "config.h"
|
|
#endif
|
|
|
|
#include <assert.h>
|
|
|
|
#include <winpr/handle.h>
|
|
|
|
#include <winpr/thread.h>
|
|
|
|
/**
|
|
* api-ms-win-core-processthreads-l1-1-1.dll
|
|
*
|
|
* CreateRemoteThread
|
|
* CreateRemoteThreadEx
|
|
* CreateThread
|
|
* DeleteProcThreadAttributeList
|
|
* ExitThread
|
|
* FlushInstructionCache
|
|
* FlushProcessWriteBuffers
|
|
* GetCurrentThread
|
|
* GetCurrentThreadId
|
|
* GetCurrentThreadStackLimits
|
|
* GetExitCodeThread
|
|
* GetPriorityClass
|
|
* GetStartupInfoW
|
|
* GetThreadContext
|
|
* GetThreadId
|
|
* GetThreadIdealProcessorEx
|
|
* GetThreadPriority
|
|
* GetThreadPriorityBoost
|
|
* GetThreadTimes
|
|
* InitializeProcThreadAttributeList
|
|
* OpenThread
|
|
* OpenThreadToken
|
|
* QueryProcessAffinityUpdateMode
|
|
* QueueUserAPC
|
|
* ResumeThread
|
|
* SetPriorityClass
|
|
* SetThreadContext
|
|
* SetThreadPriority
|
|
* SetThreadPriorityBoost
|
|
* SetThreadStackGuarantee
|
|
* SetThreadToken
|
|
* SuspendThread
|
|
* SwitchToThread
|
|
* TerminateThread
|
|
* UpdateProcThreadAttribute
|
|
*/
|
|
|
|
#ifndef _WIN32
|
|
|
|
#include <winpr/crt.h>
|
|
#include <winpr/platform.h>
|
|
|
|
#ifdef HAVE_UNISTD_H
|
|
#include <unistd.h>
|
|
#endif
|
|
|
|
#ifdef HAVE_EVENTFD_H
|
|
#include <sys/eventfd.h>
|
|
#endif
|
|
|
|
#include <winpr/debug.h>
|
|
|
|
#include <errno.h>
|
|
|
|
#include <winpr/collections.h>
|
|
|
|
#include "thread.h"
|
|
|
|
#include "../handle/handle.h"
|
|
#include "../log.h"
|
|
#define TAG WINPR_TAG("thread")
|
|
|
|
static pthread_once_t thread_initialized = PTHREAD_ONCE_INIT;
|
|
|
|
static HANDLE_CLOSE_CB _ThreadHandleCloseCb;
|
|
static wListDictionary *thread_list = NULL;
|
|
|
|
static BOOL ThreadCloseHandle(HANDLE handle);
|
|
static void cleanup_handle(void *obj);
|
|
|
|
static BOOL ThreadIsHandled(HANDLE handle)
|
|
{
|
|
WINPR_THREAD *pThread = (WINPR_THREAD *)handle;
|
|
|
|
if (!pThread || pThread->Type != HANDLE_TYPE_THREAD)
|
|
{
|
|
SetLastError(ERROR_INVALID_HANDLE);
|
|
return FALSE;
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
|
|
static void ThreadInitialize(void)
|
|
{
|
|
_ThreadHandleCloseCb.IsHandled = ThreadIsHandled;
|
|
_ThreadHandleCloseCb.CloseHandle = ThreadCloseHandle;
|
|
RegisterHandleCloseCb(&_ThreadHandleCloseCb);
|
|
}
|
|
|
|
static void dump_thread(WINPR_THREAD* thread)
|
|
{
|
|
#if defined(WITH_DEBUG_THREADS)
|
|
void* stack = winpr_backtrace(20);
|
|
char** msg;
|
|
size_t used, i;
|
|
WLog_DBG(TAG, "Called from:");
|
|
msg = winpr_backtrace_symbols(stack, &used);
|
|
|
|
for (i=0; i<used; i++)
|
|
WLog_DBG(TAG, "[%d]: %s", i, msg[i]);
|
|
|
|
free(msg);
|
|
winpr_backtrace_free(stack);
|
|
WLog_DBG(TAG, "Thread handle created still not closed!");
|
|
msg = winpr_backtrace_symbols(thread->create_stack, &used);
|
|
|
|
for (i=0; i<used; i++)
|
|
WLog_DBG(TAG, "[%d]: %s", i, msg[i]);
|
|
|
|
free(msg);
|
|
|
|
if (thread->started)
|
|
WLog_DBG(TAG, "Thread still running!");
|
|
else if (!thread->exit_stack)
|
|
WLog_DBG(TAG, "Thread suspended.");
|
|
else
|
|
{
|
|
WLog_DBG(TAG, "Thread exited at:");
|
|
msg = winpr_backtrace_symbols(thread->exit_stack, &used);
|
|
|
|
for (i=0; i<used; i++)
|
|
WLog_DBG(TAG, "[%d]: %s", i, msg[i]);
|
|
|
|
free(msg);
|
|
}
|
|
|
|
#endif
|
|
}
|
|
|
|
/**
|
|
* TODO: implement thread suspend/resume using pthreads
|
|
* http://stackoverflow.com/questions/3140867/suspend-pthreads-without-using-condition
|
|
*/
|
|
static BOOL set_event(WINPR_THREAD *thread)
|
|
{
|
|
int length;
|
|
BOOL status = FALSE;
|
|
#ifdef HAVE_EVENTFD_H
|
|
eventfd_t val = 1;
|
|
|
|
do
|
|
{
|
|
length = eventfd_write(thread->pipe_fd[0], val);
|
|
}
|
|
while ((length < 0) && (errno == EINTR));
|
|
|
|
status = (length == 0) ? TRUE : FALSE;
|
|
#else
|
|
|
|
if (WaitForSingleObject(thread, 0) != WAIT_OBJECT_0)
|
|
{
|
|
length = write(thread->pipe_fd[1], "-", 1);
|
|
|
|
if (length == 1)
|
|
status = TRUE;
|
|
}
|
|
else
|
|
{
|
|
status = TRUE;
|
|
}
|
|
|
|
#endif
|
|
return status;
|
|
}
|
|
|
|
static BOOL reset_event(WINPR_THREAD *thread)
|
|
{
|
|
int length;
|
|
BOOL status = FALSE;
|
|
#ifdef HAVE_EVENTFD_H
|
|
eventfd_t value;
|
|
|
|
do
|
|
{
|
|
length = eventfd_read(thread->pipe_fd[0], &value);
|
|
}
|
|
while ((length < 0) && (errno == EINTR));
|
|
|
|
if ((length > 0) && (!status))
|
|
status = TRUE;
|
|
|
|
#else
|
|
length = read(thread->pipe_fd[0], &length, 1);
|
|
|
|
if ((length == 1) && (!status))
|
|
status = TRUE;
|
|
|
|
#endif
|
|
return status;
|
|
}
|
|
|
|
static int thread_compare(void *a, void *b)
|
|
{
|
|
pthread_t *p1 = a;
|
|
pthread_t *p2 = b;
|
|
int rc = pthread_equal(*p1, *p2);
|
|
return rc;
|
|
}
|
|
|
|
/* Thread launcher function responsible for registering
|
|
* cleanup handlers and calling pthread_exit, if not done
|
|
* in thread function. */
|
|
static void *thread_launcher(void *arg)
|
|
{
|
|
void *rc = NULL;
|
|
WINPR_THREAD *thread = (WINPR_THREAD *)arg;
|
|
|
|
if (!thread)
|
|
{
|
|
WLog_ERR(TAG, "Called with invalid argument %p", arg);
|
|
goto exit;
|
|
}
|
|
else
|
|
{
|
|
void *(*fkt)(void *) = (void *)thread->lpStartAddress;
|
|
|
|
if (!fkt)
|
|
{
|
|
WLog_ERR(TAG, "Thread function argument is %p\n", fkt);
|
|
goto exit;
|
|
}
|
|
|
|
rc = fkt(thread->lpParameter);
|
|
}
|
|
|
|
exit:
|
|
|
|
if (!thread->exited)
|
|
thread->dwExitCode = (DWORD)(size_t)rc;
|
|
|
|
set_event(thread);
|
|
|
|
if (thread->detached || !thread->started)
|
|
cleanup_handle(thread);
|
|
|
|
pthread_exit((void*) (size_t) thread->dwExitCode);
|
|
return rc;
|
|
}
|
|
|
|
static void winpr_StartThread(WINPR_THREAD *thread)
|
|
{
|
|
pthread_attr_t attr;
|
|
pthread_attr_init(&attr);
|
|
pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_JOINABLE);
|
|
|
|
if (thread->dwStackSize > 0)
|
|
pthread_attr_setstacksize(&attr, (size_t) thread->dwStackSize);
|
|
|
|
pthread_create(&thread->thread, &attr, thread_launcher, thread);
|
|
pthread_attr_destroy(&attr);
|
|
reset_event(thread);
|
|
ListDictionary_Add(thread_list, &thread->thread, thread);
|
|
dump_thread(thread);
|
|
thread->started = TRUE;
|
|
}
|
|
|
|
HANDLE CreateThread(LPSECURITY_ATTRIBUTES lpThreadAttributes, SIZE_T dwStackSize,
|
|
LPTHREAD_START_ROUTINE lpStartAddress, LPVOID lpParameter, DWORD dwCreationFlags, LPDWORD lpThreadId)
|
|
{
|
|
HANDLE handle;
|
|
WINPR_THREAD *thread;
|
|
thread = (WINPR_THREAD *) calloc(1, sizeof(WINPR_THREAD));
|
|
|
|
if (!thread)
|
|
return NULL;
|
|
|
|
pthread_once(&thread_initialized, ThreadInitialize);
|
|
thread->dwStackSize = dwStackSize;
|
|
thread->lpParameter = lpParameter;
|
|
thread->lpStartAddress = lpStartAddress;
|
|
thread->lpThreadAttributes = lpThreadAttributes;
|
|
#if defined(WITH_DEBUG_THREADS)
|
|
thread->create_stack = winpr_backtrace(20);
|
|
dump_thread(thread);
|
|
#endif
|
|
#ifdef HAVE_EVENTFD_H
|
|
thread->pipe_fd[0] = eventfd(0, EFD_NONBLOCK);
|
|
|
|
if (thread->pipe_fd[0] < 0)
|
|
{
|
|
WLog_ERR(TAG, "failed to create thread");
|
|
free(thread);
|
|
return NULL;
|
|
}
|
|
|
|
#else
|
|
|
|
if (pipe(thread->pipe_fd) < 0)
|
|
{
|
|
WLog_ERR(TAG, "failed to create thread");
|
|
free(thread);
|
|
return NULL;
|
|
}
|
|
|
|
#endif
|
|
pthread_mutex_init(&thread->mutex, 0);
|
|
WINPR_HANDLE_SET_TYPE(thread, HANDLE_TYPE_THREAD);
|
|
handle = (HANDLE) thread;
|
|
|
|
if (NULL == thread_list)
|
|
{
|
|
thread_list = ListDictionary_New(TRUE);
|
|
thread_list->objectKey.fnObjectEquals = thread_compare;
|
|
}
|
|
|
|
if (!(dwCreationFlags & CREATE_SUSPENDED))
|
|
winpr_StartThread(thread);
|
|
else
|
|
set_event(thread);
|
|
|
|
return handle;
|
|
}
|
|
|
|
void cleanup_handle(void *obj)
|
|
{
|
|
WINPR_THREAD *thread = (WINPR_THREAD *)obj;
|
|
int rc = pthread_mutex_destroy(&thread->mutex);
|
|
|
|
if (rc)
|
|
WLog_ERR(TAG, "failed to destroy mutex [%d] %s (%d)",
|
|
rc, strerror(errno), errno);
|
|
|
|
if (thread->pipe_fd[0])
|
|
close(thread->pipe_fd[0]);
|
|
|
|
if (thread->pipe_fd[1])
|
|
close(thread->pipe_fd[1]);
|
|
|
|
if (thread_list && ListDictionary_Contains(thread_list, &thread->thread))
|
|
ListDictionary_Remove(thread_list, &thread->thread);
|
|
|
|
#if defined(WITH_DEBUG_THREADS)
|
|
|
|
if (thread->create_stack)
|
|
winpr_backtrace_free(thread->create_stack);
|
|
|
|
if (thread->exit_stack)
|
|
winpr_backtrace_free(thread->exit_stack);
|
|
|
|
#endif
|
|
free(thread);
|
|
}
|
|
|
|
BOOL ThreadCloseHandle(HANDLE handle)
|
|
{
|
|
WINPR_THREAD *thread = (WINPR_THREAD *)handle;
|
|
|
|
if (!thread_list)
|
|
{
|
|
WLog_ERR(TAG, "Thread list does not exist, check call!");
|
|
dump_thread(thread);
|
|
}
|
|
else if (!ListDictionary_Contains(thread_list, &thread->thread))
|
|
{
|
|
WLog_ERR(TAG, "Thread list does not contain this thread! check call!");
|
|
dump_thread(thread);
|
|
}
|
|
else
|
|
{
|
|
ListDictionary_Lock(thread_list);
|
|
dump_thread(thread);
|
|
|
|
if ((thread->started) && (WaitForSingleObject(thread, 0) != WAIT_OBJECT_0))
|
|
{
|
|
WLog_ERR(TAG, "Thread running, setting to detached state!");
|
|
thread->detached = TRUE;
|
|
pthread_detach(thread->thread);
|
|
}
|
|
else
|
|
cleanup_handle(thread);
|
|
|
|
ListDictionary_Unlock(thread_list);
|
|
|
|
if (ListDictionary_Count(thread_list) < 1)
|
|
{
|
|
ListDictionary_Free(thread_list);
|
|
thread_list = NULL;
|
|
}
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
HANDLE CreateRemoteThread(HANDLE hProcess, LPSECURITY_ATTRIBUTES lpThreadAttributes, SIZE_T dwStackSize,
|
|
LPTHREAD_START_ROUTINE lpStartAddress, LPVOID lpParameter, DWORD dwCreationFlags, LPDWORD lpThreadId)
|
|
{
|
|
WLog_ERR(TAG, "not implemented");
|
|
return NULL;
|
|
}
|
|
|
|
VOID ExitThread(DWORD dwExitCode)
|
|
{
|
|
pthread_t tid = pthread_self();
|
|
|
|
if (!thread_list)
|
|
{
|
|
WLog_ERR(TAG, "function called without existing thread list!");
|
|
#if defined(WITH_DEBUG_THREADS)
|
|
DumpThreadHandles();
|
|
#endif
|
|
pthread_exit(0);
|
|
}
|
|
else if (!ListDictionary_Contains(thread_list, &tid))
|
|
{
|
|
WLog_ERR(TAG, "function called, but no matching entry in thread list!");
|
|
#if defined(WITH_DEBUG_THREADS)
|
|
DumpThreadHandles();
|
|
#endif
|
|
pthread_exit(0);
|
|
}
|
|
else
|
|
{
|
|
WINPR_THREAD* thread;
|
|
|
|
ListDictionary_Lock(thread_list);
|
|
thread = ListDictionary_GetItemValue(thread_list, &tid);
|
|
|
|
assert(thread);
|
|
thread->exited = TRUE;
|
|
thread->dwExitCode = dwExitCode;
|
|
#if defined(WITH_DEBUG_THREADS)
|
|
thread->exit_stack = winpr_backtrace(20);
|
|
#endif
|
|
ListDictionary_Unlock(thread_list);
|
|
set_event(thread);
|
|
|
|
if (thread->detached || !thread->started)
|
|
cleanup_handle(thread);
|
|
|
|
pthread_exit((void*) (size_t) thread->dwExitCode);
|
|
}
|
|
}
|
|
|
|
BOOL GetExitCodeThread(HANDLE hThread, LPDWORD lpExitCode)
|
|
{
|
|
ULONG Type;
|
|
PVOID Object;
|
|
WINPR_THREAD *thread;
|
|
|
|
if (!winpr_Handle_GetInfo(hThread, &Type, &Object))
|
|
return FALSE;
|
|
|
|
thread = (WINPR_THREAD *) Object;
|
|
*lpExitCode = thread->dwExitCode;
|
|
return TRUE;
|
|
}
|
|
|
|
HANDLE _GetCurrentThread(VOID)
|
|
{
|
|
HANDLE hdl = NULL;
|
|
pthread_t tid = pthread_self();
|
|
|
|
if (NULL == thread_list)
|
|
{
|
|
WLog_ERR(TAG, "function called without existing thread list!");
|
|
#if defined(WITH_DEBUG_THREADS)
|
|
DumpThreadHandles();
|
|
#endif
|
|
}
|
|
else if (!ListDictionary_Contains(thread_list, &tid))
|
|
{
|
|
WLog_ERR(TAG, "function called, but no matching entry in thread list!");
|
|
#if defined(WITH_DEBUG_THREADS)
|
|
DumpThreadHandles();
|
|
#endif
|
|
}
|
|
else
|
|
{
|
|
hdl = ListDictionary_GetItemValue(thread_list, &tid);
|
|
}
|
|
|
|
return hdl;
|
|
}
|
|
|
|
DWORD GetCurrentThreadId(VOID)
|
|
{
|
|
pthread_t tid;
|
|
tid = pthread_self();
|
|
return (DWORD) tid;
|
|
}
|
|
|
|
DWORD ResumeThread(HANDLE hThread)
|
|
{
|
|
ULONG Type;
|
|
PVOID Object;
|
|
WINPR_THREAD *thread;
|
|
|
|
if (!winpr_Handle_GetInfo(hThread, &Type, &Object))
|
|
return 0;
|
|
|
|
thread = (WINPR_THREAD *) Object;
|
|
pthread_mutex_lock(&thread->mutex);
|
|
|
|
if (!thread->started)
|
|
winpr_StartThread(thread);
|
|
else
|
|
WLog_WARN(TAG, "Thread already started!");
|
|
|
|
pthread_mutex_unlock(&thread->mutex);
|
|
return 0;
|
|
}
|
|
|
|
DWORD SuspendThread(HANDLE hThread)
|
|
{
|
|
WLog_ERR(TAG, "Function not implemented!");
|
|
return 0;
|
|
}
|
|
|
|
BOOL SwitchToThread(VOID)
|
|
{
|
|
return TRUE;
|
|
}
|
|
|
|
BOOL TerminateThread(HANDLE hThread, DWORD dwExitCode)
|
|
{
|
|
ULONG Type;
|
|
PVOID Object;
|
|
WINPR_THREAD *thread;
|
|
|
|
if (!winpr_Handle_GetInfo(hThread, &Type, &Object))
|
|
return 0;
|
|
|
|
thread = (WINPR_THREAD *) Object;
|
|
thread->exited = TRUE;
|
|
thread->dwExitCode = dwExitCode;
|
|
pthread_mutex_lock(&thread->mutex);
|
|
#ifndef ANDROID
|
|
pthread_cancel(thread->thread);
|
|
#else
|
|
WLog_ERR(TAG, "Function not supported on this platform!");
|
|
#endif
|
|
pthread_mutex_unlock(&thread->mutex);
|
|
return TRUE;
|
|
}
|
|
|
|
#if defined(WITH_DEBUG_THREADS)
|
|
VOID DumpThreadHandles(void)
|
|
{
|
|
char** msg;
|
|
size_t used, i;
|
|
void* stack = winpr_backtrace(20);
|
|
WLog_DBG(TAG, "---------------- Called from ----------------------------");
|
|
msg = winpr_backtrace_symbols(stack, &used);
|
|
|
|
for (i=0; i<used; i++)
|
|
WLog_DBG(TAG, "[%d]: %s", i, msg[i]);
|
|
|
|
free(msg);
|
|
winpr_backtrace_free(stack);
|
|
WLog_DBG(TAG, "---------------- Start Dumping thread handles -----------");
|
|
|
|
if (!thread_list)
|
|
WLog_DBG(TAG, "All threads properly shut down and disposed of.");
|
|
else
|
|
{
|
|
ULONG_PTR *keys = NULL;
|
|
ListDictionary_Lock(thread_list);
|
|
int x, count = ListDictionary_GetKeys(thread_list, &keys);
|
|
WLog_DBG(TAG, "Dumping %d elements\n", count);
|
|
|
|
for (x=0; x<count; x++)
|
|
{
|
|
WINPR_THREAD* thread = ListDictionary_GetItemValue(thread_list, (void*)keys[x]);
|
|
WLog_DBG(TAG, "Thread [%d] handle created still not closed!", x);
|
|
msg = winpr_backtrace_symbols(thread->create_stack, &used);
|
|
|
|
for (i=0; i<used; i++)
|
|
WLog_DBG(TAG, "[%d]: %s", i, msg[i]);
|
|
|
|
free(msg);
|
|
|
|
if (thread->started)
|
|
WLog_DBG(TAG, "Thread [%d] still running!", x);
|
|
else
|
|
{
|
|
WLog_DBG(TAG, "Thread [%d] exited at:", x);
|
|
msg = winpr_backtrace_symbols(thread->exit_stack, &used);
|
|
|
|
for (i=0; i<used; i++)
|
|
WLog_DBG(TAG, "[%d]: %s", i, msg[i]);
|
|
|
|
free(msg);
|
|
}
|
|
}
|
|
|
|
if (keys)
|
|
free(keys);
|
|
|
|
ListDictionary_Unlock(thread_list);
|
|
}
|
|
|
|
WLog_DBG(TAG, "---------------- End Dumping thread handles -------------");
|
|
}
|
|
#endif
|
|
#endif
|
|
|