Check In tool source code based on Build tool project revision r1655.

[mirror_edk2.git] / BaseTools / Source / C / LzmaCompress / Sdk / C / Threads.c

/* Threads.c -- multithreading library\r
2008-08-05\r
Igor Pavlov\r
Public domain */\r
\r
#include "Threads.h"\r
#include <process.h>\r
\r
static WRes GetError()\r
{\r
  DWORD res = GetLastError();\r
  return (res) ? (WRes)(res) : 1;\r
}\r
\r
WRes HandleToWRes(HANDLE h) { return (h != 0) ? 0 : GetError(); }\r
WRes BOOLToWRes(BOOL v) { return v ? 0 : GetError(); }\r
\r
static WRes MyCloseHandle(HANDLE *h)\r
{\r
  if (*h != NULL)\r
    if (!CloseHandle(*h))\r
      return GetError();\r
  *h = NULL;\r
  return 0;\r
}\r
\r
WRes Thread_Create(CThread *thread, THREAD_FUNC_RET_TYPE (THREAD_FUNC_CALL_TYPE *startAddress)(void *), LPVOID parameter)\r
{\r
  unsigned threadId; /* Windows Me/98/95: threadId parameter may not be NULL in _beginthreadex/CreateThread functions */\r
  thread->handle =\r
    /* CreateThread(0, 0, startAddress, parameter, 0, &threadId); */\r
    (HANDLE)_beginthreadex(NULL, 0, startAddress, parameter, 0, &threadId);\r
    /* maybe we must use errno here, but probably GetLastError() is also OK. */\r
  return HandleToWRes(thread->handle);\r
}\r
\r
WRes WaitObject(HANDLE h)\r
{\r
  return (WRes)WaitForSingleObject(h, INFINITE);\r
}\r
\r
WRes Thread_Wait(CThread *thread)\r
{\r
  if (thread->handle == NULL)\r
    return 1;\r
  return WaitObject(thread->handle);\r
}\r
\r
WRes Thread_Close(CThread *thread)\r
{\r
  return MyCloseHandle(&thread->handle);\r
}\r
\r
WRes Event_Create(CEvent *p, BOOL manualReset, int initialSignaled)\r
{\r
  p->handle = CreateEvent(NULL, manualReset, (initialSignaled ? TRUE : FALSE), NULL);\r
  return HandleToWRes(p->handle);\r
}\r
\r
WRes ManualResetEvent_Create(CManualResetEvent *p, int initialSignaled)\r
  { return Event_Create(p, TRUE, initialSignaled); }\r
WRes ManualResetEvent_CreateNotSignaled(CManualResetEvent *p)\r
  { return ManualResetEvent_Create(p, 0); }\r
\r
WRes AutoResetEvent_Create(CAutoResetEvent *p, int initialSignaled)\r
  { return Event_Create(p, FALSE, initialSignaled); }\r
WRes AutoResetEvent_CreateNotSignaled(CAutoResetEvent *p)\r
  { return AutoResetEvent_Create(p, 0); }\r
\r
WRes Event_Set(CEvent *p) { return BOOLToWRes(SetEvent(p->handle)); }\r
WRes Event_Reset(CEvent *p) { return BOOLToWRes(ResetEvent(p->handle)); }\r
WRes Event_Wait(CEvent *p) { return WaitObject(p->handle); }\r
WRes Event_Close(CEvent *p) { return MyCloseHandle(&p->handle); }\r
\r
\r
WRes Semaphore_Create(CSemaphore *p, UInt32 initiallyCount, UInt32 maxCount)\r
{\r
  p->handle = CreateSemaphore(NULL, (LONG)initiallyCount, (LONG)maxCount, NULL);\r
  return HandleToWRes(p->handle);\r
}\r
\r
WRes Semaphore_Release(CSemaphore *p, LONG releaseCount, LONG *previousCount)\r
{\r
  return BOOLToWRes(ReleaseSemaphore(p->handle, releaseCount, previousCount));\r
}\r
WRes Semaphore_ReleaseN(CSemaphore *p, UInt32 releaseCount)\r
{\r
  return Semaphore_Release(p, (LONG)releaseCount, NULL);\r
}\r
WRes Semaphore_Release1(CSemaphore *p)\r
{\r
  return Semaphore_ReleaseN(p, 1);\r
}\r
\r
WRes Semaphore_Wait(CSemaphore *p) { return WaitObject(p->handle); }\r
WRes Semaphore_Close(CSemaphore *p) { return MyCloseHandle(&p->handle); }\r
\r
WRes CriticalSection_Init(CCriticalSection *p)\r
{\r
  /* InitializeCriticalSection can raise only STATUS_NO_MEMORY exception */\r
  __try\r
  {\r
    InitializeCriticalSection(p);\r
    /* InitializeCriticalSectionAndSpinCount(p, 0); */\r
  }\r
  __except (EXCEPTION_EXECUTE_HANDLER) { return 1; }\r
  return 0;\r
}\r
\r