Merge pull request #13 from nickeldan/bug/fix_alternative_timer

Makefile

@@ -28,10 +28,10 @@ format:
 	find . -path ./packages -prune -o -name '*.[hc]' -print0 | xargs -0 -n 1 clang-format -i
 
 install: /usr/local/lib/$(notdir $(SCR_SHARED_LIBRARY)) $(foreach file,$(SCR_ONLY_HEADER_FILES),/usr/local/include/scrutiny/$(notdir $(file)))
+	ldconfig
 
 /usr/local/lib/$(notdir $(SCR_SHARED_LIBRARY)): $(SCR_SHARED_LIBRARY)
 	cp $< $@
-	ldconfig
 
 /usr/local/include/scrutiny/%.h: include/scrutiny/%.h
 	@mkdir -p $(@D)

src/internal.c

@@ -148,8 +148,13 @@ waitForProcess(pid_t child, unsigned int timeout, int *status, bool *timed_out)
 
 #else  // no pidfd_open
 
-#include <stdbool.h>
-#include <time.h>
+#ifdef CLOCK_MONOTONIC_COARSE
+#define SCR_CLOCK_TYPE CLOCK_MONOTONIC_COARSE
+#else
+#define SCR_CLOCK_TYPE CLOCK_MONOTONIC
+#endif
+
+#define ONE_TENTH_SECOND 10000000
 
 static bool
 caughtSignal(void)
@@ -163,11 +168,11 @@ caughtSignal(void)
 void
 waitForProcess(pid_t child, unsigned int timeout, int *status, bool *timed_out)
 {
-    struct timespec start_time, lapse = {.tv_nsec = 10000000};
+    struct timespec start_time, lapse = {.tv_nsec = ONE_TENTH_SECOND};
 
     *timed_out = false;
     if (timeout > 0) {
-        clock_gettime(CLOCK_MOOTONIC_COARSE, &start_time);
+        clock_gettime(SCR_CLOCK_TYPE, &start_time);
     }
 
     while (1) {
@@ -179,11 +184,11 @@ waitForProcess(pid_t child, unsigned int timeout, int *status, bool *timed_out)
             return;
         }
 
-        nanosleep(&spec, NULL);
+        nanosleep(&lapse, NULL);
         if (timeout > 0 && !*timed_out) {
             struct timespec now;
 
-            clock_gettime(CLOCK_MONOTONIC_COARSE, &now);
+            clock_gettime(SCR_CLOCK_TYPE, &now);
             if (now.tv_sec - start_time.tv_sec >= timeout) {
                 *timed_out = true;
                 kill(child, SIGKILL);