Merge pull request #461 from negativeExponent/libchdr

[pcsx_rearmed.git] / deps / lzma-16.04 / C / Threads.c

/* Threads.c -- multithreading library\r
2014-09-21 : Igor Pavlov : Public domain */\r
\r
#include "Precomp.h"\r
\r
#ifndef UNDER_CE\r
#include <process.h>\r
#endif\r
\r
#include "Threads.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
WRes HandlePtr_Close(HANDLE *p)\r
{\r
  if (*p != NULL)\r
    if (!CloseHandle(*p))\r
      return GetError();\r
  *p = NULL;\r
  return 0;\r
}\r
\r
WRes Handle_WaitObject(HANDLE h) { return (WRes)WaitForSingleObject(h, INFINITE); }\r
\r
WRes Thread_Create(CThread *p, THREAD_FUNC_TYPE func, LPVOID param)\r
{\r
  /* Windows Me/98/95: threadId parameter may not be NULL in _beginthreadex/CreateThread functions */\r
  \r
  #ifdef UNDER_CE\r
  \r
  DWORD threadId;\r
  *p = CreateThread(0, 0, func, param, 0, &threadId);\r
\r
  #else\r
\r
  unsigned threadId;\r
  *p = (HANDLE)_beginthreadex(NULL, 0, func, param, 0, &threadId);\r
   \r
  #endif\r
\r
  /* maybe we must use errno here, but probably GetLastError() is also OK. */\r
  return HandleToWRes(*p);\r
}\r
\r
WRes Event_Create(CEvent *p, BOOL manualReset, int signaled)\r
{\r
  *p = CreateEvent(NULL, manualReset, (signaled ? TRUE : FALSE), NULL);\r
  return HandleToWRes(*p);\r
}\r
\r
WRes Event_Set(CEvent *p) { return BOOLToWRes(SetEvent(*p)); }\r
WRes Event_Reset(CEvent *p) { return BOOLToWRes(ResetEvent(*p)); }\r
\r
WRes ManualResetEvent_Create(CManualResetEvent *p, int signaled) { return Event_Create(p, TRUE, signaled); }\r
WRes AutoResetEvent_Create(CAutoResetEvent *p, int signaled) { return Event_Create(p, FALSE, signaled); }\r
WRes ManualResetEvent_CreateNotSignaled(CManualResetEvent *p) { return ManualResetEvent_Create(p, 0); }\r
WRes AutoResetEvent_CreateNotSignaled(CAutoResetEvent *p) { return AutoResetEvent_Create(p, 0); }\r
\r
\r
WRes Semaphore_Create(CSemaphore *p, UInt32 initCount, UInt32 maxCount)\r
{\r
  *p = CreateSemaphore(NULL, (LONG)initCount, (LONG)maxCount, NULL);\r
  return HandleToWRes(*p);\r
}\r
\r
static WRes Semaphore_Release(CSemaphore *p, LONG releaseCount, LONG *previousCount)\r
  { return BOOLToWRes(ReleaseSemaphore(*p, releaseCount, previousCount)); }\r
WRes Semaphore_ReleaseN(CSemaphore *p, UInt32 num)\r
  { return Semaphore_Release(p, (LONG)num, NULL); }\r
WRes Semaphore_Release1(CSemaphore *p) { return Semaphore_ReleaseN(p, 1); }\r
\r
WRes CriticalSection_Init(CCriticalSection *p)\r
{\r
  /* InitializeCriticalSection can raise only STATUS_NO_MEMORY exception */\r
  #ifdef _MSC_VER\r
  __try\r
  #endif\r
  {\r
    InitializeCriticalSection(p);\r
    /* InitializeCriticalSectionAndSpinCount(p, 0); */\r
  }\r
  #ifdef _MSC_VER\r
  __except (EXCEPTION_EXECUTE_HANDLER) { return 1; }\r
  #endif\r
  return 0;\r
}\r