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LinuxProcess_adjustTime: simplify by not using double 

Does not work with -ffast-math else.
This commit is contained in:
Christian Göttsche 2020-11-23 21:03:52 +01:00 committed by cgzones
parent 95f553b10c
commit 42c842c190
1 changed files with 6 additions and 8 deletions
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14
linux/LinuxProcessList.c
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@ -292,18 +292,16 @@ void ProcessList_delete(ProcessList* pl) {
} }
static inline unsigned long long LinuxProcess_adjustTime(unsigned long long t) { static inline unsigned long long LinuxProcess_adjustTime(unsigned long long t) {
static double jiffy = NAN; static long jiffy = -1;
if (isnan(jiffy)) { if (jiffy == -1) {
errno = 0; errno = 0;
long sc_jiffy = sysconf(_SC_CLK_TCK); jiffy = sysconf(_SC_CLK_TCK);
if (errno || -1 == sc_jiffy) { if (errno || -1 == jiffy) {
jiffy = NAN; jiffy = -1;
return t; // Assume 100Hz clock return t; // Assume 100Hz clock
} }
jiffy = sc_jiffy;
} }
double jiffytime = 1.0 / jiffy; return t * 100 / jiffy;
return t * jiffytime * 100;
} }
static bool LinuxProcessList_readStatFile(Process* process, const char* dirname, const char* name, char* command, int* commLen) { static bool LinuxProcessList_readStatFile(Process* process, const char* dirname, const char* name, char* command, int* commLen) {