xnu-1504.7.4.tar.gz

[apple/xnu.git] / bsd / sys / kern_memorystatus.h

diff --git a/bsd/sys/kern_memorystatus.h b/bsd/sys/kern_memorystatus.h
index f94c4a7a74a0c7ce7473bddb6d2f95b033434cc5..b89337521d8bb05c2b113921ea6ce9b3cf22f256 100644 (file)
--- a/bsd/sys/kern_memorystatus.h
+++ b/bsd/sys/kern_memorystatus.h
@@ -33,6 +33,12 @@
 #ifndef SYS_KERN_MEMORYSTATUS_H
 #define SYS_KERN_MEMORYSTATUS_H
 
+#ifndef MACH_KERNEL_PRIVATE
+
+#include <stdint.h>
+#include <sys/time.h>
+#include <sys/proc.h>
+
 /*
  * Define Memory Status event subclass.
  * Subclass of KEV_SYSTEM_CLASS
@@ -44,6 +50,11 @@
 */
 #define KEV_MEMORYSTATUS_SUBCLASS        3
 
+enum {
+       kMemoryStatusLevelNote = 1,
+       kMemoryStatusSnapshotNote = 2
+};
+
 enum {
        kMemoryStatusLevelAny = -1,
        kMemoryStatusLevelNormal = 0,
@@ -52,8 +63,62 @@ enum {
        kMemoryStatusLevelCritical = 3
 };
 
+typedef struct jetsam_priority_entry {
+       pid_t pid;
+       uint32_t flags;
+       int32_t hiwat_pages;
+       int32_t hiwat_reserved1;
+       int32_t hiwat_reserved2;
+       int32_t hiwat_reserved3;
+} jetsam_priority_entry_t;
+
+/*
+** maximum killable processes to keep track of
+*/
+#define kMaxPriorityEntries 64 
+
+typedef struct jetsam_snapshot_entry {
+       pid_t pid;
+       char name[MAXCOMLEN+1];
+       uint32_t pages;
+       uint32_t flags;
+       uint8_t uuid[16];
+} jetsam_snapshot_entry_t;
+
+/*
+** how many processes to snapshot
+*/
+#define kMaxSnapshotEntries 128 
+
+typedef struct jetsam_kernel_stats {
+       uint32_t free_pages;
+       uint32_t active_pages;
+       uint32_t inactive_pages;
+       uint32_t purgeable_pages;
+       uint32_t wired_pages;
+} jetsam_kernel_stats_t;
+
+/*
+** This is a variable-length struct.
+** Allocate a buffer of the size returned by the sysctl, cast to a jetsam_snapshot_t *
+*/
+
+typedef struct jetsam_snapshot {
+       jetsam_kernel_stats_t stats;
+       size_t entry_count;
+       jetsam_snapshot_entry_t entries[1];
+} jetsam_snapshot_t;
+
+enum {
+       kJetsamFlagsFrontmost =         (1 << 0),
+       kJetsamFlagsKilled =            (1 << 1),
+       kJetsamFlagsKilledHiwat =       (1 << 2)
+};
+#endif /* !MACH_KERNEL_PRIVATE */
+
 #ifdef KERNEL
 extern void kern_memorystatus_init(void) __attribute__((section("__TEXT, initcode")));
+extern int jetsam_kill_top_proc(void);
 
 extern int kern_memorystatus_wakeup;
 extern int kern_memorystatus_level;