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

[DAN LI]

Signed-off-by: DAN LI <li....@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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