[llvm-commits] CVS: llvm/lib/Reoptimizer/LightWtProfiling/Trigger/timer.c

[Anand Shukla]

Changes in directory llvm/lib/Reoptimizer/LightWtProfiling/Trigger:

timer.c added (r1.1)

---
Log message:

Major revision for runtime tracing framework

---
Diffs of the changes:

Index: llvm/lib/Reoptimizer/LightWtProfiling/Trigger/timer.c
diff -c /dev/null llvm/lib/Reoptimizer/LightWtProfiling/Trigger/timer.c:1.1
*** /dev/null	Fri Jul 18 11:04:10 2003
--- llvm/lib/Reoptimizer/LightWtProfiling/Trigger/timer.c	Fri Jul 18 11:04:00 2003
***************
*** 0 ****
--- 1,107 ----
+ #include <unistd.h>
+ #include <signal.h>
+ #include <sys/time.h>
+ #include <stdio.h>
+ #include <stdlib.h>
+ #include <string.h>
+ 
+ #define INTERVAL_USEC 000000
+ #define INTERVAL_SEC  10
+ 
+ void do_timer_interval();
+ uint64_t llvm_interval_counter;
+ 
+ sigset_t sig_usr2;
+ sigset_t sig_old;
+ sigset_t sig_all;
+ 
+  
+ 
+ 
+ void mask_interrupt()
+ {
+   //sigprocmask(SIG_BLOCK, &sig_usr2, &sig_old);
+ }
+ 
+ void unmask_interrupt()
+ {
+   //sigprocmask(SIG_UNBLOCK, &sig_usr2, NULL);
+ }
+ 
+ void mask_all_interrupt()
+ {
+   //sigprocmask(SIG_BLOCK, &sig_all, &sig_old);
+ }
+ 
+ void unmask_all_interrupt()
+ {
+   //sigprocmask(SIG_UNBLOCK, &sig_all, NULL);
+ }
+ 
+ void timer_handler(int i)//int i, siginfo_t* s, void* v)
+ {
+   //mask_all_interrupt();
+   signal(SIGUSR2, SIG_IGN);
+   //printf("---------------------ding\n");
+   llvm_interval_counter++;
+   do_timer_interval();
+   //printf("---------------------dong\n");
+   signal(SIGUSR2, &timer_handler);
+   //unmask_all_interrupt();
+ }
+ 
+ int initialize_timer()
+ {
+   //printf("Intializing timer\n");
+   int duration_sec=0, duration_msec=0;
+   //struct sigaction *nvec, *ovec;
+   timer_t timer_id;
+   struct sigevent timer_evp;
+   struct itimerspec timer_spec, old_timer_spec;
+   
+   memset(&timer_evp, 0, sizeof(timer_evp));
+   timer_evp.sigev_signo = SIGUSR2;
+   timer_evp.sigev_notify = SIGEV_SIGNAL;
+   
+   //duration of timer
+   if(getenv("LLVM_TIMER_INTERVAL_SEC")!=NULL)
+     duration_sec = atoi(getenv("LLVM_TIMER_INTERVAL_SEC"));
+   else duration_sec = 3;
+   
+   if(getenv("LLVM_TIMER_INTERVAL_MSEC")!=NULL)
+     duration_sec = atoi(getenv("LLVM_TIMER_INTERVAL_MSEC"));
+   else duration_msec = 0;
+ 
+   if(timer_create(CLOCK_REALTIME, &timer_evp, &timer_id)<0)
+     printf(" error\n");
+   
+   //initializing the timer
+   timer_spec.it_value.tv_sec = duration_sec;
+   timer_spec.it_value.tv_nsec = duration_msec;
+   
+   //generate voltages at TWICE the input frequency
+   //because lower and higher voltages are shown alternately
+   //convert freq into secs and nanoseconds
+   timer_spec.it_interval.tv_nsec = 0;//1000*1000000;
+   timer_spec.it_interval.tv_sec = 1;
+   
+   //set timer
+   timer_settime(timer_id, 0, &timer_spec, &old_timer_spec);
+   
+   //nvec = (struct sigaction*)malloc(sizeof(struct sigaction));
+   //ovec = (struct sigaction*)malloc(sizeof(struct sigaction));
+   
+   //  stuct sigvec nvec = new sigvec;
+   //sigvec ovec = new sigvec;
+   signal(SIGUSR2, &timer_handler);
+   /*
+   nvec->sa_handler = timer_handler;
+   
+   sigaction(SIGUSR2, nvec, ovec);
+   sigemptyset(&sig_usr2);
+   sigemptyset(&sig_old);
+   sigfillset(&sig_all);
+   sigaddset(&sig_usr2, SIGUSR2);
+   */
+   return 1;
+ }