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Search for libperfmap.so in java.library.path if not found in CWD #56

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Search for libperfmap.so in java.library.path if not found in CWD #56

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17 changes: 14 additions & 3 deletions src/java/AttachOnce.java
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Original file line number Diff line number Diff line change
Expand Up @@ -39,10 +39,21 @@ static void loadAgent(String pid, String options) throws Exception {
File lib = new File("libperfmap.so");
String fullPath = lib.getAbsolutePath();
if (!lib.exists()) {
System.out.printf("Expected libperfmap.so at '%s' but it didn't exist.\n", fullPath);
System.exit(1);
String [] javaLibPath = System.getProperty("java.library.path").split(":");
boolean foundInLibPath = false;
for (String path: javaLibPath) {
File f = new File(path + File.separator + "libperfmap.so");
if(f.exists()) {
foundInLibPath = true;
fullPath = f.getAbsolutePath();
}
}
if (!foundInLibPath) {
System.out.printf("Expected libperfmap.so at '%s' or within java.library.path but it didn't exist in either.\n", fullPath);
System.exit(1);
}
}
else vm.loadAgentPath(fullPath, options);
vm.loadAgentPath(fullPath, options);
} catch(com.sun.tools.attach.AgentInitializationException e) {
// rethrow all but the expected exception
if (!e.getMessage().equals("Agent_OnAttach failed")) throw e;
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