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Overview
| Comment: | Make the Win32 thread handles are available after the threads exit. |
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| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | threads |
| Files: | files | file ages | folders |
| SHA1: |
565c5af7a75ad5c759ce1a61dab3a61c |
| User & Date: | mistachkin 2014-07-29 16:37:53 |
Context
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2014-07-29
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| 17:22 | Fix a harmless compiler warning. check-in: 216d21d0 user: drh tags: threads | |
| 16:37 | Make the Win32 thread handles are available after the threads exit. check-in: 565c5af7 user: mistachkin tags: threads | |
| 15:18 | Fix the threads build on Windows when SQLITE_MAX_WORKER_THREADS is greater than 0. check-in: f37db3a0 user: drh tags: threads | |
| 00:23 | Fix the build on windows. check-in: 2773a5f9 user: drh tags: threads | |
Changes
Changes to src/os_win.c.
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} assert( sleepObj!=NULL ); osWaitForSingleObjectEx(sleepObj, milliseconds, FALSE); #else osSleep(milliseconds); #endif } /* ** Return true (non-zero) if we are running under WinNT, Win2K, WinXP, ** or WinCE. Return false (zero) for Win95, Win98, or WinME. ** ** Here is an interesting observation: Win95, Win98, and WinME lack ** the LockFileEx() API. But we can still statically link against that |
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} assert( sleepObj!=NULL ); osWaitForSingleObjectEx(sleepObj, milliseconds, FALSE); #else osSleep(milliseconds); #endif } DWORD sqlite3Win32Wait(HANDLE hObject){ DWORD rc; while( (rc = osWaitForSingleObjectEx(hObject, INFINITE, TRUE))==WAIT_IO_COMPLETION ){} return rc; } /* ** Return true (non-zero) if we are running under WinNT, Win2K, WinXP, ** or WinCE. Return false (zero) for Win95, Win98, or WinME. ** ** Here is an interesting observation: Win95, Win98, and WinME lack ** the LockFileEx() API. But we can still statically link against that |
Changes to src/threads.c.
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#define SQLITE_THREADS_IMPLEMENTED 1 /* Prevent the single-thread code below */
#include <process.h>
/* A running thread */
struct SQLiteThread {
uintptr_t tid; /* The thread handle */
void *(*xTask)(void*); /* The routine to run as a thread */
void *pIn; /* Argument to xTask */
void *pResult; /* Result of xTask */
};
/* Thread procedure Win32 compatibility shim */
static void sqlite3ThreadProc(
void *pArg /* IN: Pointer to the SQLiteThread structure */
){
SQLiteThread *p = (SQLiteThread *)pArg;
assert( p!=0 );
assert( p->xTask!=0 );
p->pResult = p->xTask(p->pIn);
_endthread();
}
/* Create a new thread */
int sqlite3ThreadCreate(
SQLiteThread **ppThread, /* OUT: Write the thread object here */
void *(*xTask)(void*), /* Routine to run in a separate thread */
void *pIn /* Argument passed into xTask() */
................................................................................
p = sqlite3Malloc(sizeof(*p));
if( p==0 ) return SQLITE_NOMEM;
if( sqlite3GlobalConfig.bCoreMutex==0 ){
memset(p, 0, sizeof(*p));
}else{
p->xTask = xTask;
p->pIn = pIn;
p->tid = _beginthread(sqlite3ThreadProc, 0, p);
if( p->tid==(uintptr_t)-1 ){
memset(p, 0, sizeof(*p));
}
}
if( p->xTask==0 ){
p->pResult = xTask(pIn);
}
*ppThread = p;
return SQLITE_OK;
}
/* Wait on an object */
DWORD sqlite3Win32Wait(HANDLE hObject){
DWORD rc;
while( (rc = WaitForSingleObjectEx(hObject, INFINITE,
TRUE))==WAIT_IO_COMPLETION ){}
return rc;
}
/* Get the results of the thread */
int sqlite3ThreadJoin(SQLiteThread *p, void **ppOut){
DWORD rc;
assert( ppOut!=0 );
if( p==0 ) return SQLITE_NOMEM;
if( p->xTask==0 ){
rc = WAIT_OBJECT_0;
}else{
rc = sqlite3Win32Wait((HANDLE)p->tid);
assert( rc!=WAIT_IO_COMPLETION );
}
if( rc==WAIT_OBJECT_0 ) *ppOut = p->pResult;
sqlite3_free(p);
return (rc==WAIT_OBJECT_0) ? SQLITE_OK : SQLITE_ERROR;
}
#endif /* SQLITE_OS_WIN && !SQLITE_OS_WINRT */
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#define SQLITE_THREADS_IMPLEMENTED 1 /* Prevent the single-thread code below */
#include <process.h>
/* A running thread */
struct SQLiteThread {
uintptr_t tid; /* The thread handle */
unsigned id; /* The thread identifier */
void *(*xTask)(void*); /* The routine to run as a thread */
void *pIn; /* Argument to xTask */
void *pResult; /* Result of xTask */
};
/* Thread procedure Win32 compatibility shim */
static unsigned __stdcall sqlite3ThreadProc(
void *pArg /* IN: Pointer to the SQLiteThread structure */
){
SQLiteThread *p = (SQLiteThread *)pArg;
assert( p!=0 );
assert( p->id==GetCurrentThreadId() );
assert( p->xTask!=0 );
p->pResult = p->xTask(p->pIn);
_endthreadex(0);
return 0; /* NOT REACHED */
}
/* Create a new thread */
int sqlite3ThreadCreate(
SQLiteThread **ppThread, /* OUT: Write the thread object here */
void *(*xTask)(void*), /* Routine to run in a separate thread */
void *pIn /* Argument passed into xTask() */
................................................................................
p = sqlite3Malloc(sizeof(*p));
if( p==0 ) return SQLITE_NOMEM;
if( sqlite3GlobalConfig.bCoreMutex==0 ){
memset(p, 0, sizeof(*p));
}else{
p->xTask = xTask;
p->pIn = pIn;
p->tid = _beginthreadex(0, 0, sqlite3ThreadProc, p, 0, &p->id);
if( p->tid==(uintptr_t)-1 ){
memset(p, 0, sizeof(*p));
}
}
if( p->xTask==0 ){
p->id = GetCurrentThreadId();
p->pResult = xTask(pIn);
}
*ppThread = p;
return SQLITE_OK;
}
DWORD sqlite3Win32Wait(HANDLE hObject); /* os_win.c */
/* Get the results of the thread */
int sqlite3ThreadJoin(SQLiteThread *p, void **ppOut){
DWORD rc;
BOOL bRc;
assert( ppOut!=0 );
if( p==0 ) return SQLITE_NOMEM;
if( p->xTask==0 ){
rc = WAIT_OBJECT_0;
}else{
assert( p->id!=0 && p->id!=GetCurrentThreadId() );
rc = sqlite3Win32Wait((HANDLE)p->tid);
assert( rc!=WAIT_IO_COMPLETION );
bRc = CloseHandle((HANDLE)p->tid);
assert( bRc );
}
if( rc==WAIT_OBJECT_0 ) *ppOut = p->pResult;
sqlite3_free(p);
return (rc==WAIT_OBJECT_0) ? SQLITE_OK : SQLITE_ERROR;
}
#endif /* SQLITE_OS_WIN && !SQLITE_OS_WINRT */
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