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Change AllocateRWX/DeallocateRWX to not throw an exception.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29058 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner
2006-07-07 17:32:37 +00:00
parent c1780d2a0a
commit bed22d8902
4 changed files with 85 additions and 45 deletions
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65
lib/System/Unix/Unix.h
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@@ -66,28 +66,57 @@
# define WIFEXITED(stat_val) (((stat_val) & 255) == 0)
#endif
inline void ThrowErrno(const std::string& prefix, int errnum = -1) {
char buffer[MAXPATHLEN];
buffer[0] = 0;
if (errnum == -1)
errnum = errno;
inline bool GetErrno(const std::string &prefix, std::string *ErrDest,
int errnum = -1) {
char buffer[MAXPATHLEN];
if (ErrDest == 0) return true;
buffer[0] = 0;
if (errnum == -1)
errnum = errno;
#ifdef HAVE_STRERROR_R
// strerror_r is thread-safe.
if (errnum)
strerror_r(errnum,buffer,MAXPATHLEN-1);
// strerror_r is thread-safe.
if (errnum)
strerror_r(errnum, buffer, MAXPATHLEN-1);
#elif HAVE_STRERROR
// Copy the thread un-safe result of strerror into
// the buffer as fast as possible to minimize impact
// of collision of strerror in multiple threads.
if (errnum)
strncpy(buffer,strerror(errnum),MAXPATHLEN-1);
buffer[MAXPATHLEN-1] = 0;
// Copy the thread un-safe result of strerror into
// the buffer as fast as possible to minimize impact
// of collision of strerror in multiple threads.
if (errnum)
strncpy(buffer, strerror(errnum), MAXPATHLEN-1);
buffer[MAXPATHLEN-1] = 0;
#else
// Strange that this system doesn't even have strerror
// but, oh well, just use a generic message
sprintf(buffer, "Error #%d", errnum);
// Strange that this system doesn't even have strerror
// but, oh well, just use a generic message
sprintf(buffer, "Error #%d", errnum);
#endif
throw prefix + ": " + buffer;
*ErrDest = prefix + ": " + buffer;
return true;
}
inline void ThrowErrno(const std::string& prefix, int errnum = -1) {
char buffer[MAXPATHLEN];
buffer[0] = 0;
if (errnum == -1)
errnum = errno;
#ifdef HAVE_STRERROR_R
// strerror_r is thread-safe.
if (errnum)
strerror_r(errnum,buffer,MAXPATHLEN-1);
#elif HAVE_STRERROR
// Copy the thread un-safe result of strerror into
// the buffer as fast as possible to minimize impact
// of collision of strerror in multiple threads.
if (errnum)
strncpy(buffer,strerror(errnum),MAXPATHLEN-1);
buffer[MAXPATHLEN-1] = 0;
#else
// Strange that this system doesn't even have strerror
// but, oh well, just use a generic message
sprintf(buffer, "Error #%d", errnum);
#endif
throw prefix + ": " + buffer;
}
#endif