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