/*
- * Copyright (c) 2003-2012 Apple Inc. All rights reserved.
+ * Copyright (c) 2003-2015 Apple Inc. All rights reserved.
*
* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
*
#ifdef PRIVATE
#define EVFILT_SOCK (-13) /* Socket events */
+#define EVFILT_MEMORYSTATUS (-14) /* Memorystatus events */
#endif /* PRIVATE */
-#define EVFILT_SYSCOUNT 13
+#define EVFILT_SYSCOUNT 14
#define EVFILT_THREADMARKER EVFILT_SYSCOUNT /* Internal use only */
#pragma pack(4)
* (which always returns true for regular files - regardless of the amount
* of unread data in the file).
*
- * On input, EV_OOBAND specifies that only OOB data should be looked for.
- * The returned data count is the number of bytes beyond the current OOB marker.
+ * On input, EV_OOBAND specifies that filter should actively return in the
+ * presence of OOB on the descriptor. It implies that filter will return
+ * if there is OOB data available to read OR when any other condition
+ * for the read are met (for example number of bytes regular data becomes >=
+ * low-watermark).
+ * If EV_OOBAND is not set on input, it implies that the filter should not actively
+ * return for out of band data on the descriptor. The filter will then only return
+ * when some other condition for read is met (ex: when number of regular data bytes
+ * >=low-watermark OR when socket can't receive more data (SS_CANTRCVMORE)).
*
- * On output, EV_OOBAND indicates that OOB data is present
+ * On output, EV_OOBAND indicates the presence of OOB data on the descriptor.
* If it was not specified as an input parameter, then the data count is the
- * number of bytes before the current OOB marker. If at the marker, the
- * data count indicates the number of bytes available after it. In either
- * case, it's the amount of data one could expect to receive next.
+ * number of bytes before the current OOB marker, else data count is the number
+ * of bytes beyond OOB marker.
*/
#define EV_POLL EV_FLAG0
#define EV_OOBAND EV_FLAG1
* that hangs off the proc structure. They also both play games with the hint
* passed to KNOTE(). If NOTE_SIGNAL is passed as a hint, then the lower bits
* of the hint contain the signal. IF NOTE_FORK is passed, then the lower bits
- * contain the PID of the child.
+ * contain the PID of the child (but the pid does not get passed through in
+ * the actual kevent).
*/
-#define NOTE_EXIT 0x80000000 /* process exited */
-#define NOTE_FORK 0x40000000 /* process forked */
-#define NOTE_EXEC 0x20000000 /* process exec'd */
-#define NOTE_REAP 0x10000000 /* process reaped */
-#define NOTE_SIGNAL 0x08000000 /* shared with EVFILT_SIGNAL */
-#define NOTE_EXITSTATUS 0x04000000 /* exit status to be returned, valid for child process only */
-#define NOTE_RESOURCEEND 0x02000000 /* resource limit reached, resource type returned */
-
-#if CONFIG_EMBEDDED
-/* 0x01000000 is reserved for future use */
-
-/* App states notification */
-#define NOTE_APPACTIVE 0x00800000 /* app went to active state */
-#define NOTE_APPBACKGROUND 0x00400000 /* app went to background */
-#define NOTE_APPNONUI 0x00200000 /* app went to active with no UI */
-#define NOTE_APPINACTIVE 0x00100000 /* app went to inactive state */
-#define NOTE_APPALLSTATES 0x00f00000
-#endif /* CONFIG_EMBEDDED */
-
-#define NOTE_PDATAMASK 0x000fffff /* mask for pid/signal */
+enum {
+ eNoteReapDeprecated __deprecated_enum_msg("This kqueue(2) EVFILT_PROC flag is deprecated") = 0x10000000
+};
+
+#define NOTE_EXIT 0x80000000 /* process exited */
+#define NOTE_FORK 0x40000000 /* process forked */
+#define NOTE_EXEC 0x20000000 /* process exec'd */
+#define NOTE_REAP ((unsigned int)eNoteReapDeprecated /* 0x10000000 */) /* process reaped */
+#define NOTE_SIGNAL 0x08000000 /* shared with EVFILT_SIGNAL */
+#define NOTE_EXITSTATUS 0x04000000 /* exit status to be returned, valid for child process only */
+#define NOTE_EXIT_DETAIL 0x02000000 /* provide details on reasons for exit */
+
+#define NOTE_PDATAMASK 0x000fffff /* mask for signal & exit status */
#define NOTE_PCTRLMASK (~NOTE_PDATAMASK)
+/*
+ * If NOTE_EXITSTATUS is present, provide additional info about exiting process.
+ */
+enum {
+ eNoteExitReparentedDeprecated __deprecated_enum_msg("This kqueue(2) EVFILT_PROC flag is no longer sent") = 0x00080000
+};
+#define NOTE_EXIT_REPARENTED ((unsigned int)eNoteExitReparentedDeprecated) /* exited while reparented */
+
+/*
+ * If NOTE_EXIT_DETAIL is present, these bits indicate specific reasons for exiting.
+ */
+#define NOTE_EXIT_DETAIL_MASK 0x00070000
+#define NOTE_EXIT_DECRYPTFAIL 0x00010000
+#define NOTE_EXIT_MEMORY 0x00020000
+#define NOTE_EXIT_CSERROR 0x00040000
+
+#ifdef PRIVATE
+
+/*
+ * If NOTE_EXIT_MEMORY is present, these bits indicate specific jetsam condition.
+ */
+#define NOTE_EXIT_MEMORY_DETAIL_MASK 0xfe000000
+#define NOTE_EXIT_MEMORY_VMPAGESHORTAGE 0x80000000 /* jetsam condition: lowest jetsam priority proc killed due to vm page shortage */
+#define NOTE_EXIT_MEMORY_VMTHRASHING 0x40000000 /* jetsam condition: lowest jetsam priority proc killed due to vm thrashing */
+#define NOTE_EXIT_MEMORY_HIWAT 0x20000000 /* jetsam condition: process reached its high water mark */
+#define NOTE_EXIT_MEMORY_PID 0x10000000 /* jetsam condition: special pid kill requested */
+#define NOTE_EXIT_MEMORY_IDLE 0x08000000 /* jetsam condition: idle process cleaned up */
+#define NOTE_EXIT_MEMORY_VNODE 0X04000000 /* jetsam condition: virtual node kill */
+#define NOTE_EXIT_MEMORY_FCTHRASHING 0x02000000 /* jetsam condition: lowest jetsam priority proc killed due to filecache thrashing */
+
+#endif
+
/*
* data/hint fflags for EVFILT_VM, shared with userspace.
*/
#define NOTE_VM_PRESSURE_SUDDEN_TERMINATE 0x20000000 /* will quit immediately on memory pressure */
#define NOTE_VM_ERROR 0x10000000 /* there was an error */
+#ifdef PRIVATE
+
+/*
+ * data/hint fflags for EVFILT_MEMORYSTATUS, shared with userspace.
+ */
+#define NOTE_MEMORYSTATUS_PRESSURE_NORMAL 0x00000001 /* system memory pressure has returned to normal */
+#define NOTE_MEMORYSTATUS_PRESSURE_WARN 0x00000002 /* system memory pressure has changed to the warning state */
+#define NOTE_MEMORYSTATUS_PRESSURE_CRITICAL 0x00000004 /* system memory pressure has changed to the critical state */
+#define NOTE_MEMORYSTATUS_LOW_SWAP 0x00000008 /* system is in a low-swap state */
+
+typedef enum vm_pressure_level {
+ kVMPressureNormal = 0,
+ kVMPressureWarning = 1,
+ kVMPressureUrgent = 2,
+ kVMPressureCritical = 3,
+} vm_pressure_level_t;
+
+#endif
+
/*
* data/hint fflags for EVFILT_TIMER, shared with userspace.
* The default is a (repeating) interval timer with the data
#define NOTE_NSECONDS 0x00000004 /* data is nanoseconds */
#define NOTE_ABSOLUTE 0x00000008 /* absolute timeout */
/* ... implicit EV_ONESHOT */
+#define NOTE_LEEWAY 0x00000010 /* ext[1] holds leeway for power aware timers */
+#define NOTE_CRITICAL 0x00000020 /* system does minimal timer coalescing */
+#define NOTE_BACKGROUND 0x00000040 /* system does maximum timer coalescing */
#ifdef PRIVATE
/*
* data/hint fflags for EVFILT_SOCK, shared with userspace.
#define NOTE_SUSPEND 0x00000040 /* output queue suspended */
#define NOTE_RESUME 0x00000080 /* output queue resumed */
#define NOTE_KEEPALIVE 0x00000100 /* TCP Keepalive received */
+#define NOTE_ADAPTIVE_WTIMO 0x00000200 /* TCP adaptive write timeout */
+#define NOTE_ADAPTIVE_RTIMO 0x00000400 /* TCP adaptive read timeout */
+#define NOTE_CONNECTED 0x00000800 /* socket is connected */
+#define NOTE_DISCONNECTED 0x00001000 /* socket is disconnected */
+#define NOTE_CONNINFO_UPDATED 0x00002000 /* connection info was updated */
#endif /* PRIVATE */
#ifdef KERNEL_PRIVATE
#include <sys/queue.h>
+#include <kern/kern_types.h>
#ifdef MALLOC_DECLARE
MALLOC_DECLARE(M_KQUEUE);
struct wait_queue;
SLIST_HEAD(klist, knote);
-extern void knote_init(void) __attribute__((section("__TEXT, initcode")));
+extern void knote_init(void);
extern void klist_init(struct klist *list);
#define KNOTE(list, hint) knote(list, hint)
extern int knote_unlink_wait_queue(struct knote *kn, struct wait_queue *wq, wait_queue_link_t *wqlp);
extern void knote_fdclose(struct proc *p, int fd);
extern void knote_markstayqueued(struct knote *kn);
-
+extern void knote_clearstayqueued(struct knote *kn);
#endif /* !KERNEL_PRIVATE */
#else /* KERNEL */
projects / apple / xnu.git / blobdiff