implement pthread_[sg]etconcurrency.

there is a resource limit of 0 bits to store the concurrency level
requested. thus any positive level exceeds a resource limit, resulting
in EAGAIN. :-)

diff --git a/include/pthread.h b/include/pthread.h
index 43754ddd7b47cd31b84c8c497acf0a6cad362545..5d97ebf61c804c7639886f4104f6b2db57265a34 100644 (file)
--- a/include/pthread.h
+++ b/include/pthread.h
@@ -178,6 +178,9 @@ int pthread_barrierattr_setpshared(pthread_barrierattr_t *, int);
 
 int pthread_atfork(void (*)(void), void (*)(void), void (*)(void));
 
+int pthread_getconcurrency(void);
+int pthread_setconcurrency(int);
+
 #include <bits/pthread.h>
 
 int __setjmp(void *);

diff --git a/src/thread/pthread_getconcurrency.c b/src/thread/pthread_getconcurrency.c
new file mode 100644 (file)
index 0000000..269429a
--- /dev/null
+++ b/src/thread/pthread_getconcurrency.c
@@ -0,0 +1,6 @@
+#include <pthread.h>
+
+int pthread_getconcurrency()
+{
+       return 0;
+}

diff --git a/src/thread/pthread_setconcurrency.c b/src/thread/pthread_setconcurrency.c
new file mode 100644 (file)
index 0000000..091abf9
--- /dev/null
+++ b/src/thread/pthread_setconcurrency.c
@@ -0,0 +1,9 @@
+#include <pthread.h>
+#include <errno.h>
+
+int pthread_setconcurrency(int val)
+{
+       if (val < 0) return EINVAL;
+       if (val > 0) return EAGAIN;
+       return 0;
+}