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Ported debug file locking mechanism to win32

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This commit is contained in:
Mark Vejvoda
2010-04-13 17:09:49 +00:00
parent feb61e0598
commit 0657004da2
4 changed files with 13 additions and 8 deletions
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17
source/shared_lib/sources/util/util.cpp
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@@ -18,11 +18,11 @@
#include <cstdio>
#include <stdarg.h>
#include <time.h>
#include <fcntl.h> // for open()
#ifndef WIN32
#include <fcntl.h> // for open()
#else
#ifdef WIN32
#include <io.h> // for open()
#include <sys/stat.h> // for open()
#endif
#include "platform_util.h"
@@ -44,12 +44,17 @@ string SystemFlags::lockfilename = "";
inline bool acquire_file_lock(int hnd)
{
#ifndef WIN32
struct ::flock lock;
lock.l_type = F_WRLCK;
lock.l_whence = SEEK_SET;
lock.l_start = 0;
lock.l_len = 0;
return -1 != ::fcntl(hnd, F_SETLK, &lock);
#else
HANDLE hFile = (HANDLE)_get_osfhandle(hnd);
return true == ::LockFile(hFile, 0, 0, 0, -0x10000);
#endif
}
SystemFlags::SystemFlags() {
@@ -66,7 +71,7 @@ void SystemFlags::Close() {
SystemFlags::fileStream.close();
}
if(SystemFlags::lockfilename != "") {
close(SystemFlags::lockFile);
_close(SystemFlags::lockFile);
remove(SystemFlags::lockfilename.c_str());
SystemFlags::lockfilename = "";
}
@@ -104,14 +109,14 @@ void SystemFlags::OutputDebug(DebugType type, const char *fmt, ...) {
//SystemFlags::lockFile = open(lockfile.c_str(), O_WRONLY | O_CREAT | O_EXCL, S_IRUSR|S_IWUSR);
SystemFlags::lockFile = open(lockfile.c_str(), O_WRONLY | O_CREAT, S_IRUSR|S_IWUSR);
SystemFlags::lockFile = _open(lockfile.c_str(), O_WRONLY | O_CREAT, S_IREAD | S_IWRITE);
if (SystemFlags::lockFile < 0 || acquire_file_lock(SystemFlags::lockFile) == false) {
string newlockfile = lockfile;
int idx = 1;
for(idx = 1; idx <= 100; ++idx) {
newlockfile = lockfile + intToStr(idx);
//SystemFlags::lockFile = open(newlockfile.c_str(), O_WRONLY | O_CREAT | O_EXCL, S_IRUSR|S_IWUSR);
SystemFlags::lockFile = open(newlockfile.c_str(), O_WRONLY | O_CREAT, S_IRUSR|S_IWUSR);
SystemFlags::lockFile = _open(newlockfile.c_str(), O_WRONLY | O_CREAT, S_IREAD | S_IWRITE);
if(SystemFlags::lockFile >= 0 && acquire_file_lock(SystemFlags::lockFile) == true) {
break;
}