xnu-6153.11.26.tar.gz

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

diff --git a/bsd/sys/kern_memorystatus_notify.h b/bsd/sys/kern_memorystatus_notify.h
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+/*
+ * Copyright (c) 2006-2018 Apple Computer, Inc. All rights reserved.
+ *
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
+ *
+ * This file contains Original Code and/or Modifications of Original Code
+ * as defined in and that are subject to the Apple Public Source License
+ * Version 2.0 (the 'License'). You may not use this file except in
+ * compliance with the License. The rights granted to you under the License
+ * may not be used to create, or enable the creation or redistribution of,
+ * unlawful or unlicensed copies of an Apple operating system, or to
+ * circumvent, violate, or enable the circumvention or violation of, any
+ * terms of an Apple operating system software license agreement.
+ *
+ * Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this file.
+ *
+ * The Original Code and all software distributed under the License are
+ * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
+ * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
+ * Please see the License for the specific language governing rights and
+ * limitations under the License.
+ *
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
+ */
+
+#ifndef SYS_MEMORYSTATUS_NOTIFY_H
+#define SYS_MEMORYSTATUS_NOTIFY_H
+
+#include <stdint.h>
+#include <sys/proc.h>
+#include <sys/param.h>
+
+#if VM_PRESSURE_EVENTS
+
+extern vm_pressure_level_t memorystatus_vm_pressure_level;
+extern boolean_t memorystatus_hwm_candidates;
+
+boolean_t memorystatus_warn_process(pid_t pid, __unused boolean_t is_active, __unused boolean_t is_fatal, boolean_t exceeded);
+int memorystatus_send_note(int event_code, void *data, size_t data_length);
+void memorystatus_send_low_swap_note(void);
+void consider_vm_pressure_events(void);
+
+#if CONFIG_MEMORYSTATUS
+
+int memorystatus_low_mem_privileged_listener(uint32_t op_flags);
+int memorystatus_send_pressure_note(int pid);
+boolean_t memorystatus_is_foreground_locked(proc_t p);
+boolean_t memorystatus_bg_pressure_eligible(proc_t p);
+void memorystatus_proc_flags_unsafe(void * v, boolean_t *is_dirty, boolean_t *is_dirty_tracked, boolean_t *allow_idle_exit);
+extern void memorystatus_issue_fg_band_notify(void);
+
+#endif /* CONFIG_MEMORYSTATUS */
+
+#if DEBUG
+#define VM_PRESSURE_DEBUG(cond, format, ...)      \
+do {                                              \
+if (cond) { printf(format, ##__VA_ARGS__); } \
+} while(0)
+#else
+#define VM_PRESSURE_DEBUG(cond, format, ...)
+#endif
+
+#endif /* VM_PRESSURE_EVENTS */
+
+#endif /* SYS_MEMORYSTATUS_NOTIFY_H */