// Trace Server.cpp : Defines the entry point for the DLL application.
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//
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#define IMPLEMENT_DLL_INTERFACE
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#include "stdafx.h"
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#include <jni.h>
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#include "../JavaTracer/com_cisco_avvid_trace_JavaTracer.h"
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#include "TraceServer.h"
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#include "CTraceServer.h"
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int Initialize();
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int Uninitialize();
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CTraceServer traceServer;
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int gCount(0);
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HINSTANCE TraceInstance;
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CRITICAL_SECTION g_csDllMutex;
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BOOL APIENTRY DllMain( HANDLE hModule,
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DWORD ul_reason_for_call,
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LPVOID lpReserved
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)
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{
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switch(ul_reason_for_call) {
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case DLL_PROCESS_ATTACH:
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InitializeCriticalSection(&g_csDllMutex);
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TraceInstance = (HINSTANCE)hModule;
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gCount = 0;
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break;
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case DLL_PROCESS_DETACH:
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DeleteCriticalSection(&g_csDllMutex);
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break;
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default:
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break;
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}
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return TRUE;
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}
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DLLFUNCTION int InitializeTracing() {
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int result = Initialize(); // waits until the tracer thread has a message queue
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if (result >= 0) {
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EnterCriticalSection(&g_csDllMutex);
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result = ++gCount;
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LeaveCriticalSection(&g_csDllMutex);
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}
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return result;
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}
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DLLFUNCTION int UninitializeTracing() {
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int result = 0;
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EnterCriticalSection(&g_csDllMutex);
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result = --gCount;
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LeaveCriticalSection(&g_csDllMutex);
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if (result == 0)
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Uninitialize();
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return result;
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}
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DLLFUNCTION int Trace(char *traceBuffer) {
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return traceServer.trace(traceBuffer);
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}
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DLLFUNCTION char * GetTraceBuffer() {
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return traceServer.getTraceBuffer();
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}
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JNIEXPORT jint JNICALL Java_com_cisco_avvid_trace_JavaTracer_InitializeTracing
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(JNIEnv *, jobject) {
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return InitializeTracing();
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}
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JNIEXPORT jint JNICALL Java_com_cisco_avvid_trace_JavaTracer_UninitializeTracing
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(JNIEnv *, jobject) {
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return UninitializeTracing();
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}
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JNIEXPORT jint JNICALL Java_com_cisco_avvid_trace_JavaTracer_tracef
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(JNIEnv *env, jobject, jstring traceString) {
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char *traceBuffer = GetTraceBuffer();
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// memset(traceBuffer, 0, TRACE_BUFFER_SIZE);
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if (traceBuffer) {
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const char *utf_string;
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jboolean isCopy;
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utf_string = env->GetStringUTFChars(traceString, &isCopy);
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// int bytesToCopy = strlen(utf_string);
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int bytesWritten = _snprintf(traceBuffer, TRACE_BUFFER_SIZE, "%s\n", utf_string);
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if (isCopy == JNI_TRUE) {
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env->ReleaseStringUTFChars(traceString, utf_string);
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}
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traceBuffer[TRACE_BUFFER_SIZE-1] = '\n';
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}
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return Trace(traceBuffer);
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}
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int Initialize() {
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return traceServer.initialize();
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}
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int Uninitialize() {
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return traceServer.uninitialize();
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}
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