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Make Skia for Android libjpeg use ashmem

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BUG=skia:1282

Review URL: https://codereview.chromium.org/1108013002
This commit is contained in:
msarett 2015-04-27 10:57:22 -07:00 committed by Commit bot
parent db3ce12c81
commit a3a8eb6f63
5 changed files with 376 additions and 1 deletions
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19
platform_tools/android/gyp/dependencies.gypi
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@ -34,6 +34,19 @@
'-w',
],
},
{
'target_name': 'ashmem',
'type': 'static_library',
'sources': [
'../third_party/ashmem/cutils/ashmem.h',
'../third_party/ashmem/cutils/ashmem-dev.c'
],
'direct_dependent_settings': {
'include_dirs': [
'../third_party/ashmem',
]
},
},
{
'target_name': 'expat',
'type': 'static_library',
@ -102,6 +115,9 @@
{
'target_name': 'jpeg',
'type': 'static_library',
'dependencies': [
'ashmem'
],
'sources': [
'../third_party/externals/jpeg/jcapimin.c',
'../third_party/externals/jpeg/jcapistd.c',
@ -144,7 +160,7 @@
'../third_party/externals/jpeg/jidctfst.c',
'../third_party/externals/jpeg/jidctint.c',
'../third_party/externals/jpeg/jidctred.c',
'../third_party/externals/jpeg/jmem-android.c',
'../third_party/externals/jpeg/jmem-ashmem.c',
'../third_party/externals/jpeg/jmemmgr.c',
'../third_party/externals/jpeg/jquant1.c',
'../third_party/externals/jpeg/jquant2.c',
@ -192,6 +208,7 @@
'-w',
'-fvisibility=hidden',
'-DAVOID_TABLES',
'-DUSE_ANDROID_ASHMEM',
'-O3',
'-fstrict-aliasing',
'-fprefetch-loop-arrays',

202
platform_tools/android/third_party/ashmem/LICENSE vendored Normal file
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@ -0,0 +1,202 @@
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10
platform_tools/android/third_party/ashmem/README.skia vendored Normal file
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@ -0,0 +1,10 @@
This is copied directly from chromium/src/third_party/ashmem. It is used only
for testing purposes. The client is expected to provide its own ashmem
implementation.
Name: Android
URL: http://source.android.com
Description: Android shared memory implementation. Only applies to OS_ANDROID.
Version: 7203eb2a8a29a7b721a48cd291700f38f3da1456
Security Critical: yes
License: Apache 2.0

100
platform_tools/android/third_party/ashmem/cutils/ashmem-dev.c vendored Normal file
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@ -0,0 +1,100 @@
/*
* Copyright (C) 2008 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.
*/
/*
* Implementation of the user-space ashmem API for devices, which have our
* ashmem-enabled kernel. See ashmem-sim.c for the "fake" tmp-based version,
* used by the simulator.
*/
#include <unistd.h>
#include <string.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/ioctl.h>
#include <fcntl.h>
#include <linux/ashmem.h>
#include "ashmem.h"
#define ASHMEM_DEVICE "/dev/ashmem"
/*
* ashmem_create_region - creates a new ashmem region and returns the file
* descriptor, or <0 on error
*
* `name' is an optional label to give the region (visible in /proc/pid/maps)
* `size' is the size of the region, in page-aligned bytes
*/
int ashmem_create_region(const char *name, size_t size)
{
int fd, ret;
fd = open(ASHMEM_DEVICE, O_RDWR);
if (fd < 0)
return fd;
if (name) {
char buf[ASHMEM_NAME_LEN];
strlcpy(buf, name, sizeof(buf));
ret = ioctl(fd, ASHMEM_SET_NAME, buf);
if (ret < 0)
goto error;
}
ret = ioctl(fd, ASHMEM_SET_SIZE, size);
if (ret < 0)
goto error;
return fd;
error:
close(fd);
return ret;
}
int ashmem_set_prot_region(int fd, int prot)
{
return ioctl(fd, ASHMEM_SET_PROT_MASK, prot);
}
int ashmem_pin_region(int fd, size_t offset, size_t len)
{
struct ashmem_pin pin = { offset, len };
return ioctl(fd, ASHMEM_PIN, &pin);
}
int ashmem_unpin_region(int fd, size_t offset, size_t len)
{
struct ashmem_pin pin = { offset, len };
return ioctl(fd, ASHMEM_UNPIN, &pin);
}
int ashmem_get_size_region(int fd)
{
return ioctl(fd, ASHMEM_GET_SIZE, NULL);
}
int ashmem_purge_all(void)
{
const int fd = open(ASHMEM_DEVICE, O_RDWR);
if (fd < 0)
return fd;
const int ret = ioctl(fd, ASHMEM_PURGE_ALL_CACHES, 0);
close(fd);
return ret;
}

46
platform_tools/android/third_party/ashmem/cutils/ashmem.h vendored Normal file
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@ -0,0 +1,46 @@
/* third_party/ashmem/ashmem.h
**
** Copyright 2008 The Android Open Source Project
**
** This file is dual licensed. It may be redistributed and/or modified
** under the terms of the Apache 2.0 License OR version 2 of the GNU
** General Public License.
*/
#ifndef _THIRD_PARTY_ASHMEM_H
#define _THIRD_PARTY_ASHMEM_H
#include <stddef.h>
#ifdef __cplusplus
extern "C" {
#endif
int ashmem_create_region(const char *name, size_t size);
int ashmem_set_prot_region(int fd, int prot);
int ashmem_pin_region(int fd, size_t offset, size_t len);
int ashmem_unpin_region(int fd, size_t offset, size_t len);
int ashmem_get_size_region(int fd);
int ashmem_purge_all(void);
#ifdef __cplusplus
}
#endif
#ifndef __ASHMEMIOC /* in case someone included <linux/ashmem.h> too */
#define ASHMEM_NAME_LEN 256
#define ASHMEM_NAME_DEF "dev/ashmem"
/* Return values from ASHMEM_PIN: Was the mapping purged while unpinned? */
#define ASHMEM_NOT_PURGED 0
#define ASHMEM_WAS_PURGED 1
/* Return values from ASHMEM_UNPIN: Is the mapping now pinned or unpinned? */
#define ASHMEM_IS_UNPINNED 0
#define ASHMEM_IS_PINNED 1
#endif /* ! __ASHMEMIOC */
#endif /* _THIRD_PARTY_ASHMEM_H */