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MSVC port (vardyh) (#746)

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* unicorn: use waitable timer to implement usleep() on Windows

Signed-off-by: vardyh <vardyh.dev@gmail.com>

* atomic: implement barrier() for msvc

Signed-off-by: vardyh <vardyh.dev@gmail.com>
This commit is contained in:
vardyh
2017-02-07 21:31:35 +08:00
committed by Nguyen Anh Quynh
parent 3151604d4d
commit 7f9251511e
5 changed files with 30 additions and 40 deletions
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30
include/unicorn/platform.h
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@ -169,20 +169,24 @@ static int gettimeofday(struct timeval* t, void* timezone)
// unistd.h compatibility
#if defined(_MSC_VER)
// horrible kludge requiring winsock to get microsecond sleep resolution.
// if this is removed then all winsock references can also be removed.
static int usleep(uint32_t t)
static int usleep(uint32_t usec)
{
int ret, err_code;
long value = t; // time in microseconds
struct timeval tv;
FD_SET dummy_set;
FD_ZERO(&dummy_set);
tv.tv_sec = value / 1000000;
tv.tv_usec = value % 1000000;
ret = select(0, &dummy_set, NULL, NULL, &tv);
err_code = WSAGetLastError();
return ret==0 ? 0 : -1;
HANDLE timer;
LARGE_INTEGER due;
timer = CreateWaitableTimer(NULL, TRUE, NULL);
if (!timer)
return -1;
due.QuadPart = (-((int64_t) usec)) * 10LL;
if (!SetWaitableTimer(timer, &due, 0, NULL, NULL, 0)) {
CloseHandle(timer);
return -1;
}
WaitForSingleObject(timer, INFINITE);
CloseHandle(timer);
return 0;
}
#else