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// Copyright 2014 The Bazel Authors. All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
// INTERNAL header file for use by C++ code in this package.
#ifndef BAZEL_SRC_MAIN_NATIVE_UNIX_JNI_H__
#define BAZEL_SRC_MAIN_NATIVE_UNIX_JNI_H__
#include <errno.h>
#include <jni.h>
#include <sys/stat.h>
#include <string>
namespace blaze_jni {
#if defined(__APPLE__) || defined(__FreeBSD__) || defined(__OpenBSD__)
// stat64 is deprecated on OS X/BSD.
typedef struct stat portable_stat_struct;
#define portable_stat ::stat
#define portable_lstat ::lstat
#else
typedef struct stat64 portable_stat_struct;
#define portable_stat ::stat64
#define portable_lstat ::lstat64
#endif
#if !defined(ENODATA)
# if defined(ENOATTR)
# define ENODATA ENOATTR
# else
# error We do not know how to handle missing ENODATA
# endif
#endif
// Posts a JNI exception to the current thread with the specified
// message plus the standard UNIX error message for the error number.
// (Consistent with errors generated by java.io package.)
// The exception's class is determined by the specified UNIX error number.
extern void PostException(JNIEnv *env, int error_number,
const std::string &message);
// Returns the standard error message for a given UNIX error number.
extern std::string ErrorMessage(int error_number);
// Runs fstatat(2), if available, or sets errno to ENOSYS if not.
int portable_fstatat(int dirfd, char *name, portable_stat_struct *statbuf,
int flags);
// Encoding for different timestamps in a struct stat{}.
enum StatTimes {
STAT_ATIME, // access
STAT_MTIME, // modification
STAT_CTIME, // status change
};
// Returns seconds from a stat buffer.
int StatSeconds(const portable_stat_struct &statbuf, StatTimes t);
// Returns nanoseconds from a stat buffer.
int StatNanoSeconds(const portable_stat_struct &statbuf, StatTimes t);
// Runs getxattr(2). If the attribute is not found, returns -1 and sets
// attr_not_found to true. For all other errors, returns -1, sets attr_not_found
// to false and leaves errno set to the error code returned by the system.
ssize_t portable_getxattr(const char *path, const char *name, void *value,
size_t size, bool *attr_not_found);
// Runs lgetxattr(2). If the attribute is not found, returns -1 and sets
// attr_not_found to true. For all other errors, returns -1, sets attr_not_found
// to false and leaves errno set to the error code returned by the system.
ssize_t portable_lgetxattr(const char *path, const char *name, void *value,
size_t size, bool *attr_not_found);
// Run sysctlbyname(3), only available on darwin
int portable_sysctlbyname(const char *name_chars, void *mibp, size_t *sizep);
// Used to surround an region that we want sleep disabled for.
// push_disable_sleep to start the area.
// pop_disable_sleep to end the area.
// Note that this is a stack so sleep will not be reenabled until the stack
// is empty.
// Returns 0 on success.
// Returns -1 if sleep is not supported.
int portable_push_disable_sleep();
int portable_pop_disable_sleep();
// Starts up any infrastructure needed to do suspend monitoring.
// May be called more than once.
void portable_start_suspend_monitoring();
// These need to be kept in sync with constants in
// j/c/g/devtools/build/lib/buildtool/buildevent/SystemSuspensionEvent.java
typedef enum {
SuspensionReasonSIGTSTP = 0,
SuspensionReasonSIGCONT = 1,
SuspensionReasonSleep = 2,
SuspensionReasonWake = 3
} SuspensionReason;
// Declaration for callback function that is called by suspend monitoring
// when a suspension is detected.
extern void suspend_callback(SuspensionReason value);
// Starts up any infrastructure needed to do thermal monitoring.
// May be called more than once.
void portable_start_thermal_monitoring();
// Declaration for callback function that is called by thermal monitoring
// when a thermal event is detected.
extern void thermal_callback(int value);
// Returns the current thermal load.
int portable_thermal_load();
// Starts up any infrastructure needed to do system load advisory monitoring.
// May be called more than once.
void portable_start_system_load_advisory_monitoring();
// Declaration for callback function that is called by system load advisory
// monitoring when a system load advisory event is detected.
extern void system_load_advisory_callback(int value);
// Returns the system load advisory.
int portable_system_load_advisory();
// Starts up any infrastructure needed to do memory pressure monitoring.
// May be called more than once.
void portable_start_memory_pressure_monitoring();
// These need to be kept in sync with constants in
// j/c/g/devtools/build/lib/buildtool/buildevent/SystemMemoryPressureEvent.java
typedef enum {
MemoryPressureLevelNormal = 0,
MemoryPressureLevelWarning = 1,
MemoryPressureLevelCritical = 2,
} MemoryPressureLevel;
// Declaration for callback function that is called by memory pressure
// monitoring when memory pressure is detected.
extern void memory_pressure_callback(MemoryPressureLevel level);
// Returns the current memory pressure.
MemoryPressureLevel portable_memory_pressure();
// Starts up any infrastructure needed to do disk space monitoring.
// May be called more than once.
void portable_start_disk_space_monitoring();
// These need to be kept in sync with constants in
// j/c/g/devtools/build/lib/buildtool/buildevent/SystemDiskSpaceEvent.java
typedef enum {
DiskSpaceLevelLow = 0,
DiskSpaceLevelVeryLow = 1,
} DiskSpaceLevel;
// Declaration for callback function that is called by disk space
// monitoring when a disk space alert happens.
extern void disk_space_callback(DiskSpaceLevel level);
// Starts up any infrastructure needed to do cpu speed monitoring.
// May be called more than once.
void portable_start_cpu_speed_monitoring();
// Returns the current CPU speed. Return -1 in case of error.
int portable_cpu_speed();
// Declaration for callback function that is called by cpu speed
// monitoring when a cpu speed alert happens.
extern void cpu_speed_callback(int speed);
} // namespace blaze_jni
#endif // BAZEL_SRC_MAIN_NATIVE_UNIX_JNI_H__