add url for gperftools

@@ -21,6 +21,7 @@ IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */
 */
 /**
 /**
+@see: http://google-perftools.googlecode.com/svn/trunk/doc/cpuprofile.html
 config srs with gperf(to make gperftools):
 config srs with gperf(to make gperftools):
     ./configure --with-gperf --jobs=3
     ./configure --with-gperf --jobs=3
 set the pprof path if not set:
 set the pprof path if not set:

@@ -21,6 +21,7 @@ IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */
 */
 /**
 /**
+@see: http://google-perftools.googlecode.com/svn/trunk/doc/heap_checker.html
 config srs with gperf(to make gperftools):
 config srs with gperf(to make gperftools):
     ./configure --with-gperf --jobs=3
     ./configure --with-gperf --jobs=3
 set the pprof path if not set:
 set the pprof path if not set:
@@ -56,8 +57,12 @@ void global_leak() {
     global_leak_imp();
     global_leak_imp();
 }
 }
 
 
+bool loop = true;
 void handler(int sig) {
 void handler(int sig) {
-    exit(0);
+    // we must use signal to notice the main thread to exit normally.
+    if (sig == SIGINT) {
+        loop = false;
+    }
 }
 }
 int main(int argc, char** argv) {
 int main(int argc, char** argv) {
     signal(SIGINT, handler);
     signal(SIGINT, handler);
@@ -65,10 +70,16 @@ int main(int argc, char** argv) {
     global_leak();
     global_leak();
     printf("press CTRL+C if you want to abort the program.\n");
     printf("press CTRL+C if you want to abort the program.\n");
     sleep(3);
     sleep(3);
+    if (!loop) {
+        return 0;
+    }
     
     
     explicit_leak();
     explicit_leak();
     printf("press CTRL+C if you want to abort the program.\n");
     printf("press CTRL+C if you want to abort the program.\n");
     sleep(3);
     sleep(3);
+    if (!loop) {
+        return 0;
+    }
     
     
     return 0;
     return 0;
 }
 }

@@ -21,6 +21,7 @@ IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */
 */
 /**
 /**
+@see: http://google-perftools.googlecode.com/svn/trunk/doc/heapprofile.html
 config srs with gperf(to make gperftools):
 config srs with gperf(to make gperftools):
     ./configure --with-gperf --jobs=3
     ./configure --with-gperf --jobs=3
 set the pprof path if not set:
 set the pprof path if not set: