[Assorted-commits] SF.net SVN: assorted:[1386] sandbox/trunk/src/misc

[<yan...@us...>]

Revision: 1386
          http://assorted.svn.sourceforge.net/assorted/?rev=1386&view=rev
Author:   yangzhang
Date:     2009-05-07 06:13:04 +0000 (Thu, 07 May 2009)

Log Message:
-----------
added perftools demo

Added Paths:
-----------
    sandbox/trunk/src/misc/perftools/
    sandbox/trunk/src/misc/perftools/Makefile
    sandbox/trunk/src/misc/perftools/README
    sandbox/trunk/src/misc/perftools/main.c
    sandbox/trunk/src/misc/perftools/st.c

Added: sandbox/trunk/src/misc/perftools/Makefile
===================================================================
--- sandbox/trunk/src/misc/perftools/Makefile	                        (rev 0)
+++ sandbox/trunk/src/misc/perftools/Makefile	2009-05-07 06:13:04 UTC (rev 1386)
@@ -0,0 +1,6 @@
+TARGETS = main st
+LDLIBS += -lprofiler -lst
+all: $(TARGETS)
+.PHONY: clean
+clean:
+	rm -f $(TARGETS)

Added: sandbox/trunk/src/misc/perftools/README
===================================================================
--- sandbox/trunk/src/misc/perftools/README	                        (rev 0)
+++ sandbox/trunk/src/misc/perftools/README	2009-05-07 06:13:04 UTC (rev 1386)
@@ -0,0 +1,3 @@
+Demo of how google perftools CPU profiler can only profile CPU time not time
+spent blocking (sleeping in this case).  Demo of both regular sleep, a bunch of
+usleeps, and st sleeps.

Added: sandbox/trunk/src/misc/perftools/main.c
===================================================================
--- sandbox/trunk/src/misc/perftools/main.c	                        (rev 0)
+++ sandbox/trunk/src/misc/perftools/main.c	2009-05-07 06:13:04 UTC (rev 1386)
@@ -0,0 +1,12 @@
+#include <unistd.h>
+int main() {
+  int i;
+#if 0
+  for (i = 0; i < 100000; ++i) {
+    usleep(1);
+  }
+#else
+  sleep(1);
+#endif
+  return 0;
+}

Added: sandbox/trunk/src/misc/perftools/st.c
===================================================================
--- sandbox/trunk/src/misc/perftools/st.c	                        (rev 0)
+++ sandbox/trunk/src/misc/perftools/st.c	2009-05-07 06:13:04 UTC (rev 1386)
@@ -0,0 +1,7 @@
+#include <st.h>
+int main() {
+  st_init();
+  st_sleep(1);
+  st_sleep(1);
+  return 0;
+}


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