Make Skia for Android libjpeg use ashmem

BUG=skia:1282

Review URL: https://codereview.chromium.org/1108013002

5 files changed, 376 insertions, 1 deletions

diff --git a/platform_tools/android/gyp/dependencies.gypi b/platform_tools/android/gyp/dependencies.gypi
index 3c6c423990..8bacd434a5 100644
--- a/platform_tools/android/gyp/dependencies.gypi
+++ b/platform_tools/android/gyp/dependencies.gypi
@@ -35,6 +35,19 @@
       ],
     },
     {
+      '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',
       'sources': [
@@ -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',
diff --git a/platform_tools/android/third_party/ashmem/LICENSE b/platform_tools/android/third_party/ashmem/LICENSE
new file mode 100644
index 0000000000..d645695673
--- /dev/null
+++ b/platform_tools/android/third_party/ashmem/LICENSE
@@ -0,0 +1,202 @@
+
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diff --git a/platform_tools/android/third_party/ashmem/README.skia b/platform_tools/android/third_party/ashmem/README.skia
new file mode 100644
index 0000000000..10ce2b3b3e
--- /dev/null
+++ b/platform_tools/android/third_party/ashmem/README.skia
@@ -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
diff --git a/platform_tools/android/third_party/ashmem/cutils/ashmem-dev.c b/platform_tools/android/third_party/ashmem/cutils/ashmem-dev.c
new file mode 100644
index 0000000000..2303369d81
--- /dev/null
+++ b/platform_tools/android/third_party/ashmem/cutils/ashmem-dev.c
@@ -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;
+}
diff --git a/platform_tools/android/third_party/ashmem/cutils/ashmem.h b/platform_tools/android/third_party/ashmem/cutils/ashmem.h
new file mode 100644
index 0000000000..7d411cc064
--- /dev/null
+++ b/platform_tools/android/third_party/ashmem/cutils/ashmem.h
@@ -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 */