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/*
* Copyright (C) 2013 The Android Open Source Project
*
* 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.
*/
#ifndef _LIBMEMTRACK_MEMTRACK_H_
#define _LIBMEMTRACK_MEMTRACK_H_
#include <sys/types.h>
#include <stddef.h>
#ifdef __cplusplus
extern "C" {
#endif
/**
* struct memtrack_proc
*
* an opaque handle to the memory stats on a process.
* Created with memtrack_proc_new, destroyed by
* memtrack_proc_destroy. Can be reused multiple times with
* memtrack_proc_get.
*/
struct memtrack_proc;
/**
* memtrack_proc_new
*
* Return a new handle to hold process memory stats.
*
* Returns NULL on error.
*/
struct memtrack_proc *memtrack_proc_new(void);
/**
* memtrack_proc_destroy
*
* Free all memory associated with a process memory stats handle.
*/
void memtrack_proc_destroy(struct memtrack_proc *p);
/**
* memtrack_proc_get
*
* Fill a process memory stats handle with data about the given pid. Can be
* called on a handle that was just allocated with memtrack_proc_new,
* or on a handle that has been previously passed to memtrack_proc_get
* to replace the data with new data on the same or another process. It is
* expected that the second call on the same handle should not require
* allocating any new memory.
*
* Returns 0 on success, -errno on error.
*/
int memtrack_proc_get(struct memtrack_proc *p, pid_t pid);
/**
* memtrack_proc_graphics_total
*
* Return total amount of memory that has been allocated for use as window
* buffers. Does not differentiate between memory that has already been
* accounted for by reading /proc/pid/smaps and memory that has not been
* accounted for.
*
* Returns non-negative size in bytes on success, -errno on error.
*/
ssize_t memtrack_proc_graphics_total(struct memtrack_proc *p);
/**
* memtrack_proc_graphics_pss
*
* Return total amount of memory that has been allocated for use as window
* buffers, but has not already been accounted for by reading /proc/pid/smaps.
* Memory that is shared across processes may already be divided by the
* number of processes that share it (preferred), or may be charged in full to
* every process that shares it, depending on the capabilities of the driver.
*
* Returns non-negative size in bytes on success, -errno on error.
*/
ssize_t memtrack_proc_graphics_pss(struct memtrack_proc *p);
/**
* memtrack_proc_gl_total
*
* Same as memtrack_proc_graphics_total, but counts GL memory (which
* should not overlap with graphics memory) instead of graphics memory.
*
* Returns non-negative size in bytes on success, -errno on error.
*/
ssize_t memtrack_proc_gl_total(struct memtrack_proc *p);
/**
* memtrack_proc_gl_pss
*
* Same as memtrack_proc_graphics_total, but counts GL memory (which
* should not overlap with graphics memory) instead of graphics memory.
*
* Returns non-negative size in bytes on success, -errno on error.
*/
ssize_t memtrack_proc_gl_pss(struct memtrack_proc *p);
/**
* memtrack_proc_other_total
*
* Same as memtrack_proc_graphics_total, but counts miscellaneous memory
* not tracked by gl or graphics calls above.
*
* Returns non-negative size in bytes on success, -errno on error.
*/
ssize_t memtrack_proc_other_total(struct memtrack_proc *p);
/**
* memtrack_proc_other_pss
*
* Same as memtrack_proc_graphics_total, but counts miscellaneous memory
* not tracked by gl or graphics calls above.
*
* Returns non-negative size in bytes on success, -errno on error.
*/
ssize_t memtrack_proc_other_pss(struct memtrack_proc *p);
/**
* class DeviceInfo
*
* Contains the device id and name.
*/
namespace aidl {
namespace android {
namespace hardware {
namespace memtrack {
class DeviceInfo;
} // namespace memtrack
} // namespace hardware
} // namespace android
} // namespace aidl
/**
* memtrack_gpu_device_info
*
* Populates the @device_info vector with the DeviceInfo for all GPU devices.
*
* Returns true on success and false otherwise.
*/
bool memtrack_gpu_device_info(
std::vector<aidl::android::hardware::memtrack::DeviceInfo>* device_info);
#ifdef __cplusplus
}
#endif
#endif
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