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BUG: Fix non-select process impl without timeout 

This avoids use of an uninitialized value in the KWSys ProcessUNIX
polling implementation when no timeout is given.
This commit is contained in:
Brad King 2009-06-10 11:46:21 -04:00
parent 776e21d1c7
commit 1eec4fe6ad
1 changed files with 8 additions and 12 deletions
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20
Source/kwsys/ProcessUNIX.c
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@ -156,7 +156,8 @@ static int kwsysProcessGetTimeoutTime(kwsysProcess* cp, double* userTimeout,
kwsysProcessTime* timeoutTime);
static int kwsysProcessGetTimeoutLeft(kwsysProcessTime* timeoutTime,
double* userTimeout,
kwsysProcessTimeNative* timeoutLength);
kwsysProcessTimeNative* timeoutLength,
int zeroIsExpired);
static kwsysProcessTime kwsysProcessTimeGetCurrent(void);
static double kwsysProcessTimeToDouble(kwsysProcessTime t);
static kwsysProcessTime kwsysProcessTimeFromDouble(double d);
@ -1097,7 +1098,7 @@ static int kwsysProcessWaitForPipe(kwsysProcess* cp, char** data, int* length,
}
if(kwsysProcessGetTimeoutLeft(&wd->TimeoutTime,
wd->User?wd->UserTimeout:0,
&timeoutLength))
&timeoutLength, 0))
{
/* Timeout has already expired. */
wd->Expired = 1;
@ -1210,14 +1211,7 @@ static int kwsysProcessWaitForPipe(kwsysProcess* cp, char** data, int* length,
}
if(kwsysProcessGetTimeoutLeft(&wd->TimeoutTime, wd->User?wd->UserTimeout:0,
&timeoutLength))
{
/* Timeout has already expired. */
wd->Expired = 1;
return 1;
}
if((timeoutLength.tv_sec == 0) && (timeoutLength.tv_usec == 0))
&timeoutLength, 1))
{
/* Timeout has already expired. */
wd->Expired = 1;
@ -1905,7 +1899,8 @@ static int kwsysProcessGetTimeoutTime(kwsysProcess* cp, double* userTimeout,
Returns 1 if the time has already arrived, and 0 otherwise. */
static int kwsysProcessGetTimeoutLeft(kwsysProcessTime* timeoutTime,
double* userTimeout,
kwsysProcessTimeNative* timeoutLength)
kwsysProcessTimeNative* timeoutLength,
int zeroIsExpired)
{
if(timeoutTime->tv_sec < 0)
{
@ -1925,7 +1920,8 @@ static int kwsysProcessGetTimeoutLeft(kwsysProcessTime* timeoutTime,
timeLeft.tv_usec = 0;
}
if(timeLeft.tv_sec < 0)
if(timeLeft.tv_sec < 0 ||
(timeLeft.tv_sec == 0 && timeLeft.tv_usec == 0 && zeroIsExpired))
{
/* Timeout has already expired. */
return 1;