xnu-4570.20.62.tar.gz

[apple/xnu.git] / libsyscall / wrappers / spawn / posix_spawn.c

diff --git a/libsyscall/wrappers/spawn/posix_spawn.c b/libsyscall/wrappers/spawn/posix_spawn.c
index 4c36d0e9016017f86ed0015ed5b2cef881cfa2cf..69002dc0b1c79166d93953666db49c0fbdc7fed0 100644 (file)
--- a/libsyscall/wrappers/spawn/posix_spawn.c
+++ b/libsyscall/wrappers/spawn/posix_spawn.c
@@ -39,7 +39,7 @@
 #include <mach/port.h>
 #include <mach/exception_types.h>
 #include <mach/coalition.h> /* for COALITION_TYPE_MAX */
-
+#include <sys/kern_memorystatus.h>
 
 /*
  * posix_spawnattr_init
@@ -1331,6 +1331,78 @@ posix_spawnattr_getcpumonitor(posix_spawnattr_t * __restrict attr,
        return (0);
 }
 
+#if TARGET_OS_EMBEDDED
+/*
+ * posix_spawnattr_setjetsam
+ *
+ * Description:        Set jetsam attributes for the spawn attribute object
+ *             referred to by 'attr'.
+ *
+ * Parameters: flags                   The flags value to set
+ *             priority                Relative jetsam priority
+ *             memlimit                Value in megabytes; a memory footprint
+ *                                     above this level may result in termination.
+ *                                     Implies both active and inactive limits.
+ *
+ * Returns:    0                       Success
+ *
+ * Note: to be deprecated (not available on desktop)
+ *
+ */
+int
+posix_spawnattr_setjetsam(posix_spawnattr_t * __restrict attr,
+               short flags, int priority, int memlimit)
+{
+       short flags_ext = flags;
+
+        if (flags & POSIX_SPAWN_JETSAM_MEMLIMIT_FATAL) {
+                flags_ext |= POSIX_SPAWN_JETSAM_MEMLIMIT_ACTIVE_FATAL;
+                flags_ext |= POSIX_SPAWN_JETSAM_MEMLIMIT_INACTIVE_FATAL;
+        } else {
+                flags_ext &= ~POSIX_SPAWN_JETSAM_MEMLIMIT_ACTIVE_FATAL;
+                flags_ext &= ~POSIX_SPAWN_JETSAM_MEMLIMIT_INACTIVE_FATAL;
+        }
+
+       return (posix_spawnattr_setjetsam_ext(attr, flags_ext, priority, memlimit, memlimit));
+}
+#endif /* TARGET_OS_EMBEDDED */
+
+/*
+ * posix_spawnattr_setjetsam_ext
+ *
+ * Description:        Set jetsam attributes for the spawn attribute object
+ *             referred to by 'attr'.
+ *
+ * Parameters: flags                   The flags value to set
+ *             priority                Relative jetsam priority
+ *             memlimit_active         Value in megabytes; memory footprint
+ *                                     above this level while process is
+ *                                     active may result in termination.
+ *             memlimit_inactive       Value in megabytes; memory footprint
+ *                                     above this level while process is
+ *                                     inactive may result in termination.
+ *
+ * Returns:    0                       Success
+ */
+int
+posix_spawnattr_setjetsam_ext(posix_spawnattr_t * __restrict attr,
+       short flags, int priority, int memlimit_active, int memlimit_inactive)
+{
+       _posix_spawnattr_t psattr;
+
+       if (attr == NULL || *attr == NULL)
+               return EINVAL;
+
+       psattr = *(_posix_spawnattr_t *)attr;
+
+       psattr->psa_jetsam_flags = flags;
+       psattr->psa_jetsam_flags |= POSIX_SPAWN_JETSAM_SET;
+       psattr->psa_priority = priority;
+       psattr->psa_memlimit_active = memlimit_active;
+       psattr->psa_memlimit_inactive = memlimit_inactive;
+
+       return (0);
+}
 
 
 /*