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Overview
| Comment: | Improvements to the xRandomness() method on the default windows VFS. Ticket #2615. (CVS 4374) |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA1: |
91b50f31e35652a40d51f5d9bf22efce |
| User & Date: | drh 2007-09-03 13:06:12 |
Context
|
2007-09-03
| ||
| 15:03 | Fix a problem in hash.c when replacing entries in tables configured with copyKey==0. (CVS 4375) (check-in: a19d3a73 user: danielk1977 tags: trunk) | |
| 13:06 | Improvements to the xRandomness() method on the default windows VFS. Ticket #2615. (CVS 4374) (check-in: 91b50f31 user: drh tags: trunk) | |
| 12:34 | Document the fact that xRandomness is only called once from the default VFS. Ticket #2614. (CVS 4373) (check-in: e89d4131 user: drh tags: trunk) | |
Changes
Changes to src/os_win.c.
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#endif
/*
** Write up to nBuf bytes of randomness into zBuf.
*/
static int winRandomness(sqlite3_vfs *pVfs, int nBuf, char *zBuf){
if( sizeof(LPSYSTEMTIME)>=nBuf ){
GetSystemTime((LPSYSTEMTIME)zBuf);
return sizeof(LPSYSTEMTIME);
}else{
return 0;
}
}
/*
** Sleep for a little while. Return the amount of time slept.
*/
static int winSleep(sqlite3_vfs *pVfs, int microsec){
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#endif
/*
** Write up to nBuf bytes of randomness into zBuf.
*/
static int winRandomness(sqlite3_vfs *pVfs, int nBuf, char *zBuf){
int n = 0;
if( sizeof(LPSYSTEMTIME)<=nBuf-n ){
SYSTEMTIME x;
GetSystemTime(&x);
memcpy(&zBuf[n], &x, sizeof(x));
n += sizeof(x);
}
if( sizeof(DWORD)<=nBuf-n ){
DWORD pid = GetCurrentProcessId();
memcpy(&zBuf[n], &pid, sizeof(pid));
n += sizeof(pid);
}
if( sizeof(DWORD)<=nBuf-n ){
DWORD cnt = GetTickCount();
memcpy(&zBuf[n], &cnt, sizeof(cnt));
n += sizeof(cnt);
}
if( sizeof(LARGE_INTEGER)<=nBuf-n ){
LARGE_INTEGER i;
QueryPerformanceCounter(&i);
memcpy(&zBuf[n], &i, sizeof(i));
n += sizeof(i);
}
return n;
}
/*
** Sleep for a little while. Return the amount of time slept.
*/
static int winSleep(sqlite3_vfs *pVfs, int microsec){
|