jackpal@google.com
c6920baa3b
Avoid false-positive error detection by calling dlerror() once (and ignoring the result) before calling dlsym(). See "man dlsym" on a Linux machine for more discussion of how to detect errors when calling dlsym(). Review URL: https://codereview.chromium.org//10943002 git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@12504 260f80e4-7a28-3924-810f-c04153c831b5
24 lines
840 B
C++
24 lines
840 B
C++
// Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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#include "bin/extensions.h"
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#include <dlfcn.h>
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void* Extensions::LoadExtensionLibrary(const char* library_path,
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const char* extension_name) {
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const char* strings[] = { library_path, "/lib",
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extension_name, ".so", NULL };
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char* library_file = Concatenate(strings);
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void* lib_handle = dlopen(library_file, RTLD_LAZY);
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free(library_file);
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return lib_handle;
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}
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void* Extensions::ResolveSymbol(void* lib_handle, const char* symbol) {
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dlerror();
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void* result = dlsym(lib_handle, symbol);
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if (dlerror() != NULL) return NULL;
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return result;
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}
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