[LTP] [PATCH v3] pthread_cond_brodcast/1-2.c hung when mem left is not enough

[DAN LI <li.dan@cn.fujitsu.com>]

Signed-off-by: DAN LI <li.dan@cn.fujitsu.com>
---
  .../interfaces/pthread_cond_broadcast/1-2.c        |   47 ++++++++++++++++++--
  1 files changed, 43 insertions(+), 4 deletions(-)

diff --git a/testcases/open_posix_testsuite/conformance/interfaces/pthread_cond_broadcast/1-2.c b/testcases/open_posix_testsuite/conformance/interfaces/pthread_cond_broadcast/1-2.c
index f6ad9df..69243ea 100644
--- a/testcases/open_posix_testsuite/conformance/interfaces/pthread_cond_broadcast/1-2.c
+++ b/testcases/open_posix_testsuite/conformance/interfaces/pthread_cond_broadcast/1-2.c
@@ -48,6 +48,7 @@
  #include <sys/mman.h>
  #include <sys/wait.h>
  #include <semaphore.h>
+#include <sys/sysinfo.h>
  
  #include "../testfrmw/testfrmw.h"
  #include "../testfrmw/testfrmw.c"
@@ -82,8 +83,8 @@
  #endif
  
  /* Do not create more than this amount of children: */
-#define MAX_PROCESS_CHILDREN  (200)
-#define MAX_THREAD_CHILDREN   (1000)
+static int max_process_children  = 200;
+static int max_thread_children = 1000;
  
  #define TIMEOUT  (180)
  
@@ -243,6 +244,42 @@ void *timer(void *arg)
  	return NULL; /* For compiler */
  }
  
+#ifdef __linux__
+static void decide_process_children_count(void)
+{
+	struct sysinfo sysinforma;
+	int ret;
+	int avail_count;
+	unsigned long memper;
+	unsigned long min_stack;
+
+	min_stack = sysconf(_SC_THREAD_STACK_MIN);
+
+	ret = sysinfo(&sysinforma);
+	if (ret != 0)
+		UNRESOLVED(ret, "Failed to get system infomation.");
+
+	memper = min_stack * max_thread_children;
+	if (memper > sysinforma.freeram)
+		UNTESTED("Free ram not enough for test.");
+
+	avail_count = sysinforma.freeram / memper;
+
+	if (avail_count < 10)
+		UNTESTED("Free ram not enough for test.");
+
+	max_process_children = (avail_count < max_process_children ?
+					avail_count : max_process_children);
+
+	return;
+}
+#else
+static void decide_process_children_count(void)
+{
+	return;
+}
+#endif
+
  int main(int argc, char *argv[])
  {
  	int ret;
@@ -268,6 +305,8 @@ int main(int argc, char *argv[])
  
  	output_init();
  
+	decide_process_children_count();
+
  	/* check the system abilities */
  	pshared = sysconf(_SC_THREAD_PROCESS_SHARED);
  	cs = sysconf(_SC_CLOCK_SELECTION);
@@ -476,7 +515,7 @@ int main(int argc, char *argv[])
  				} else {
  					ret = errno;
  				}
-			} while ((ret == 0) && (child_count < MAX_THREAD_CHILDREN));
+			} while ((ret == 0) && (child_count < max_thread_children));
  			#if VERBOSE > 2
  			output("[parent] Created %i children threads\n", child_count);
  			#endif
@@ -504,7 +543,7 @@ int main(int argc, char *argv[])
  				} else {
  					ret = errno;
  				}
-			} while ((ret == 0) && (child_count < MAX_PROCESS_CHILDREN));
+			} while ((ret == 0) && (child_count < max_process_children));
  			#if VERBOSE > 2
  			output("[parent] Created %i children processes\n", child_count);
  			#endif
-- 
1.7.7.6



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