gecko/mozglue/android/nsGeckoUtils.cpp

110 lines
3.5 KiB
C++

/* -*- Mode: c++; c-basic-offset: 4; tab-width: 20; indent-tabs-mode: nil; -*-
* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (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.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is Mozilla Android code.
*
* The Initial Developer of the Original Code is Mozilla Foundation.
* Portions created by the Initial Developer are Copyright (C) 2010
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Brad Lassey <blassey@mozilla.com>
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#include <jni.h>
#ifdef MOZ_MEMORY
// Wrap malloc and free to use jemalloc
#define malloc __wrap_malloc
#define free __wrap_free
#endif
#include <stdlib.h>
#include <fcntl.h>
extern "C"
__attribute__ ((visibility("default")))
void JNICALL
Java_org_mozilla_gecko_GeckoAppShell_putenv(JNIEnv *jenv, jclass, jstring map)
{
const char* str;
// XXX: java doesn't give us true UTF8, we should figure out something
// better to do here
str = jenv->GetStringUTFChars(map, NULL);
if (str == NULL)
return;
putenv(strdup(str));
jenv->ReleaseStringUTFChars(map, str);
}
extern "C"
__attribute__ ((visibility("default")))
jobject JNICALL
Java_org_mozilla_gecko_GeckoAppShell_allocateDirectBuffer(JNIEnv *jenv, jclass, jlong size)
{
return jenv->NewDirectByteBuffer(malloc(size), size);
}
extern "C"
__attribute__ ((visibility("default")))
void JNICALL
Java_org_mozilla_gecko_GeckoAppShell_freeDirectBuffer(JNIEnv *jenv, jclass, jobject buf)
{
free(jenv->GetDirectBufferAddress(buf));
}
extern "C"
__attribute__ ((visibility("default")))
void JNICALL
Java_org_mozilla_gecko_GeckoAppShell_unlockDatabaseFile(JNIEnv *jenv, jclass, jstring jDatabasePath)
{
const char *databasePath = jenv->GetStringUTFChars(jDatabasePath, NULL);
int fd = open(databasePath, O_RDWR);
jenv->ReleaseStringUTFChars(jDatabasePath, databasePath);
// File could not be open, do nothing
if (fd < 0) {
return;
}
struct flock lock;
lock.l_type = F_WRLCK;
lock.l_whence = SEEK_SET;
lock.l_start = 0;
lock.l_len = 0;
int result = fcntl(fd, F_GETLK, &lock);
// Release any existing lock in the file
if (result != -1 && lock.l_type == F_WRLCK) {
lock.l_type = F_UNLCK;
fcntl(fd, F_SETLK, &lock);
}
close(fd);
}