Partial support for Haiku (#3727)

[ghc-hetmet.git] / rts / posix / GetTime.c

diff --git a/rts/posix/GetTime.c b/rts/posix/GetTime.c
index a2d9a31..939eef1 100644 (file)
--- a/rts/posix/GetTime.c
+++ b/rts/posix/GetTime.c
@@ -32,6 +32,10 @@
 # include <sys/times.h>
 #endif
 
+#ifdef USE_PAPI
+# include <papi.h>
+#endif
+
 #if ! ((defined(HAVE_GETRUSAGE) && !irix_HOST_OS) || defined(HAVE_TIMES))
 #error No implementation for getProcessCPUTime() available.
 #endif
@@ -68,9 +72,17 @@ void getProcessTimes(Ticks *user, Ticks *elapsed)
 
 Ticks getProcessCPUTime(void)
 {
+#if !defined(THREADED_RTS) && USE_PAPI
+    long long usec;
+    if ((usec = PAPI_get_virt_usec()) < 0) {
+       barf("PAPI_get_virt_usec: %lld", usec);
+    }
+    return ((usec * TICKS_PER_SECOND) / 1000000);
+#else
     Ticks user, elapsed;
     getProcessTimes(&user,&elapsed);
     return user;
+#endif
 }
 
 Ticks getProcessElapsedTime(void)
@@ -115,15 +127,24 @@ void getProcessTimes(Ticks *user, Ticks *elapsed)
 
 Ticks getThreadCPUTime(void)
 {
-#if defined(HAVE_CLOCK_GETTIME) && defined(CLOCK_THREAD_CPUTIME_ID)
-    // clock_gettime() gives us per-thread CPU time.  It isn't
-    // reliable on Linux, but it's the best we have.
-    struct timespec ts;
-    int res;
-    res = clock_gettime(CLOCK_THREAD_CPUTIME_ID, &ts);
-    if (res == 0) {
-        return ((Ticks)ts.tv_sec * TICKS_PER_SECOND +
-                ((Ticks)ts.tv_nsec * TICKS_PER_SECOND) / 1000000000);
+#if USE_PAPI
+    long long usec;
+    if ((usec = PAPI_get_virt_usec()) < 0) {
+       barf("PAPI_get_virt_usec: %lld", usec);
+    }
+    return ((usec * TICKS_PER_SECOND) / 1000000);
+
+#elif !defined(BE_CONSERVATIVE) && defined(HAVE_CLOCK_GETTIME) && defined (_POSIX_THREAD_CPUTIME) && defined(CLOCK_THREAD_CPUTIME_ID) && defined(HAVE_SYSCONF)
+    if (sysconf(_POSIX_THREAD_CPUTIME) != -1) {
+        // clock_gettime() gives us per-thread CPU time.  It isn't
+        // reliable on Linux, but it's the best we have.
+        struct timespec ts;
+        int res;
+        res = clock_gettime(CLOCK_THREAD_CPUTIME_ID, &ts);
+        if (res == 0) {
+            return ((Ticks)ts.tv_sec * TICKS_PER_SECOND +
+                    ((Ticks)ts.tv_nsec * TICKS_PER_SECOND) / 1000000000);
+        }
     }
 #endif
     return getProcessCPUTime();
@@ -132,7 +153,7 @@ Ticks getThreadCPUTime(void)
 nat
 getPageFaults(void)
 {
-#if !defined(HAVE_GETRUSAGE) || irix_HOST_OS
+#if !defined(HAVE_GETRUSAGE) || irix_HOST_OS || haiku_HOST_OS
     return 0;
 #else
     struct rusage t;