Many hyperlinks are disabled.
Use anonymous login
to enable hyperlinks.
Overview
| Comment: | Readability improvements for winRandomness. |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA1: |
1640f814c7a5210f08c81e52e5a3fb89 |
| User & Date: | mistachkin 2016-02-15 22:37:18 |
Context
|
2016-02-15
| ||
| 23:46 | Fix a harmless compiler warning in FTS5. (check-in: e52c9075 user: drh tags: trunk) | |
| 22:37 | Readability improvements for winRandomness. (check-in: 1640f814 user: mistachkin tags: trunk) | |
| 22:28 | Fix comment. No changes to code. (check-in: 2e1f2eff user: mistachkin tags: trunk) | |
Changes
Changes to src/os_win.c.
5406
5407
5408
5409
5410
5411
5412
5413
5414
5415
5416
5417
5418
5419
5420
....
5422
5423
5424
5425
5426
5427
5428
5429
5430
5431
5432
5433
5434
5435
5436
5437
5438
5439
5440
5441
5442
5443
5444
5445
5446
5447
5448
5449
5450
5451
5452
5453
5454
5455
5456
5457
5458
5459
5460
5461
5462
5463
5464
5465
5466
5467
5468
5469
5470
5471
5472
5473
5474
5475
5476
|
for(j=0, k=p->i; j<sz; j++){
p->a[k++] ^= x[j];
if( k>=p->na ) k = 0;
}
p->i = k;
p->nXor += sz;
}
#endif
/*
** Write up to nBuf bytes of randomness into zBuf.
*/
static int winRandomness(sqlite3_vfs *pVfs, int nBuf, char *zBuf){
#if defined(SQLITE_TEST) || defined(SQLITE_OMIT_RANDOMNESS)
UNUSED_PARAMETER(pVfs);
................................................................................
return nBuf;
#else
EntropyGatherer e;
UNUSED_PARAMETER(pVfs);
memset(zBuf, 0, nBuf);
#if defined(_MSC_VER) && _MSC_VER>=1400
rand_s((int*)zBuf); /* rand_s() is not available with MinGW */
#endif
e.a = (unsigned char*)zBuf;
e.na = nBuf;
e.nXor = 0;
e.i = 0;
{
SYSTEMTIME x;
osGetSystemTime(&x);
xorMemory(&e, (unsigned char*)&x, sizeof(x));
}
{
DWORD pid = osGetCurrentProcessId();
xorMemory(&e, (unsigned char*)&pid, sizeof(pid));
}
#if SQLITE_OS_WINRT
{
ULONGLONG cnt = osGetTickCount64();
xorMemory(&e, (unsigned char*)&cnt, sizeof(cnt));
}
#else
{
DWORD cnt = osGetTickCount();
xorMemory(&e, (unsigned char*)&cnt, sizeof(cnt));
}
#endif
{
LARGE_INTEGER i;
osQueryPerformanceCounter(&i);
xorMemory(&e, (unsigned char*)&i, sizeof(i));
}
#if !SQLITE_OS_WINCE && !SQLITE_OS_WINRT && SQLITE_WIN32_USE_UUID
{
UUID id;
memset(&id, 0, sizeof(UUID));
osUuidCreate(&id);
xorMemory(&e, (unsigned char*)&id, sizeof(UUID));
memset(&id, 0, sizeof(UUID));
osUuidCreateSequential(&id);
xorMemory(&e, (unsigned char*)&id, sizeof(UUID));
}
#endif
return e.nXor>nBuf ? nBuf : e.nXor;
#endif /* defined(SQLITE_TEST) || defined(SQLITE_OMIT_RANDOMNESS) */
}
/*
** Sleep for a little while. Return the amount of time slept.
|
|
|
|
|
|
|
|
|
|
|
5406
5407
5408
5409
5410
5411
5412
5413
5414
5415
5416
5417
5418
5419
5420
....
5422
5423
5424
5425
5426
5427
5428
5429
5430
5431
5432
5433
5434
5435
5436
5437
5438
5439
5440
5441
5442
5443
5444
5445
5446
5447
5448
5449
5450
5451
5452
5453
5454
5455
5456
5457
5458
5459
5460
5461
5462
5463
5464
5465
5466
5467
5468
5469
5470
5471
5472
5473
5474
5475
5476
|
for(j=0, k=p->i; j<sz; j++){
p->a[k++] ^= x[j];
if( k>=p->na ) k = 0;
}
p->i = k;
p->nXor += sz;
}
#endif /* !defined(SQLITE_TEST) && !defined(SQLITE_OMIT_RANDOMNESS) */
/*
** Write up to nBuf bytes of randomness into zBuf.
*/
static int winRandomness(sqlite3_vfs *pVfs, int nBuf, char *zBuf){
#if defined(SQLITE_TEST) || defined(SQLITE_OMIT_RANDOMNESS)
UNUSED_PARAMETER(pVfs);
................................................................................
return nBuf;
#else
EntropyGatherer e;
UNUSED_PARAMETER(pVfs);
memset(zBuf, 0, nBuf);
#if defined(_MSC_VER) && _MSC_VER>=1400
rand_s((int*)zBuf); /* rand_s() is not available with MinGW */
#endif /* defined(_MSC_VER) && _MSC_VER>=1400 */
e.a = (unsigned char*)zBuf;
e.na = nBuf;
e.nXor = 0;
e.i = 0;
{
SYSTEMTIME x;
osGetSystemTime(&x);
xorMemory(&e, (unsigned char*)&x, sizeof(SYSTEMTIME));
}
{
DWORD pid = osGetCurrentProcessId();
xorMemory(&e, (unsigned char*)&pid, sizeof(DWORD));
}
#if SQLITE_OS_WINRT
{
ULONGLONG cnt = osGetTickCount64();
xorMemory(&e, (unsigned char*)&cnt, sizeof(ULONGLONG));
}
#else
{
DWORD cnt = osGetTickCount();
xorMemory(&e, (unsigned char*)&cnt, sizeof(DWORD));
}
#endif /* SQLITE_OS_WINRT */
{
LARGE_INTEGER i;
osQueryPerformanceCounter(&i);
xorMemory(&e, (unsigned char*)&i, sizeof(LARGE_INTEGER));
}
#if !SQLITE_OS_WINCE && !SQLITE_OS_WINRT && SQLITE_WIN32_USE_UUID
{
UUID id;
memset(&id, 0, sizeof(UUID));
osUuidCreate(&id);
xorMemory(&e, (unsigned char*)&id, sizeof(UUID));
memset(&id, 0, sizeof(UUID));
osUuidCreateSequential(&id);
xorMemory(&e, (unsigned char*)&id, sizeof(UUID));
}
#endif /* !SQLITE_OS_WINCE && !SQLITE_OS_WINRT && SQLITE_WIN32_USE_UUID */
return e.nXor>nBuf ? nBuf : e.nXor;
#endif /* defined(SQLITE_TEST) || defined(SQLITE_OMIT_RANDOMNESS) */
}
/*
** Sleep for a little while. Return the amount of time slept.
|