Move liblttng-ust-java* to 'src/lib/'

[lttng-ust.git] / src / lib / lttng-ust-java-agent / jni / log4j / lttng_ust_log4j.c

diff --git a/src/lib/lttng-ust-java-agent/jni/log4j/lttng_ust_log4j.c b/src/lib/lttng-ust-java-agent/jni/log4j/lttng_ust_log4j.c
new file mode 100644 (file)
index 0000000..e88235a
--- /dev/null
+++ b/src/lib/lttng-ust-java-agent/jni/log4j/lttng_ust_log4j.c
@@ -0,0 +1,106 @@
+/*
+ * SPDX-License-Identifier: LGPL-2.1-only
+ *
+ * Copyright (C) 2016 EfficiOS Inc.
+ * Copyright (C) 2016 Alexandre Montplaisir <alexmonthy@efficios.com>
+ * Copyright (C) 2011-2012 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
+ */
+
+#define _LGPL_SOURCE
+#include "org_lttng_ust_agent_log4j_LttngLog4jApi.h"
+
+#define TRACEPOINT_DEFINE
+#define TRACEPOINT_CREATE_PROBES
+#include "lttng_ust_log4j.h"
+#include "../common/lttng_ust_context.h"
+
+/*
+ * Deprecated function from before the context information was passed.
+ */
+JNIEXPORT void JNICALL Java_org_lttng_ust_agent_log4j_LttngLog4jApi_tracepoint(JNIEnv *env,
+                                               jobject jobj __attribute__((unused)),
+                                               jstring msg,
+                                               jstring logger_name,
+                                               jstring class_name,
+                                               jstring method_name,
+                                               jstring file_name,
+                                               jint line_number,
+                                               jlong timestamp,
+                                               jint loglevel,
+                                               jstring thread_name)
+{
+       jboolean iscopy;
+       const char *msg_cstr = (*env)->GetStringUTFChars(env, msg, &iscopy);
+       const char *logger_name_cstr = (*env)->GetStringUTFChars(env, logger_name, &iscopy);
+       const char *class_name_cstr = (*env)->GetStringUTFChars(env, class_name, &iscopy);
+       const char *method_name_cstr = (*env)->GetStringUTFChars(env, method_name, &iscopy);
+       const char *file_name_cstr = (*env)->GetStringUTFChars(env, file_name, &iscopy);
+       const char *thread_name_cstr = (*env)->GetStringUTFChars(env, thread_name, &iscopy);
+
+       tracepoint(lttng_log4j, event, msg_cstr, logger_name_cstr,
+                  class_name_cstr, method_name_cstr, file_name_cstr,
+                  line_number, timestamp, loglevel, thread_name_cstr);
+
+       (*env)->ReleaseStringUTFChars(env, msg, msg_cstr);
+       (*env)->ReleaseStringUTFChars(env, logger_name, logger_name_cstr);
+       (*env)->ReleaseStringUTFChars(env, class_name, class_name_cstr);
+       (*env)->ReleaseStringUTFChars(env, method_name, method_name_cstr);
+       (*env)->ReleaseStringUTFChars(env, file_name, file_name_cstr);
+       (*env)->ReleaseStringUTFChars(env, thread_name, thread_name_cstr);
+}
+
+/*
+ * Tracepoint used by Java applications using the log4j handler.
+ */
+JNIEXPORT void JNICALL Java_org_lttng_ust_agent_log4j_LttngLog4jApi_tracepointWithContext(JNIEnv *env,
+                                               jobject jobj __attribute__((unused)),
+                                               jstring msg,
+                                               jstring logger_name,
+                                               jstring class_name,
+                                               jstring method_name,
+                                               jstring file_name,
+                                               jint line_number,
+                                               jlong timestamp,
+                                               jint loglevel,
+                                               jstring thread_name,
+                                               jbyteArray context_info_entries,
+                                               jbyteArray context_info_strings)
+{
+       jboolean iscopy;
+       const char *msg_cstr = (*env)->GetStringUTFChars(env, msg, &iscopy);
+       const char *logger_name_cstr = (*env)->GetStringUTFChars(env, logger_name, &iscopy);
+       const char *class_name_cstr = (*env)->GetStringUTFChars(env, class_name, &iscopy);
+       const char *method_name_cstr = (*env)->GetStringUTFChars(env, method_name, &iscopy);
+       const char *file_name_cstr = (*env)->GetStringUTFChars(env, file_name, &iscopy);
+       const char *thread_name_cstr = (*env)->GetStringUTFChars(env, thread_name, &iscopy);
+       signed char *context_info_entries_array;
+       signed char *context_info_strings_array;
+
+       /*
+        * Write these to the TLS variables, so that the UST callbacks in
+        * lttng_ust_context.c can access them.
+        */
+       context_info_entries_array = (*env)->GetByteArrayElements(env, context_info_entries, &iscopy);
+       lttng_ust_context_info_tls.ctx_entries = (struct lttng_ust_jni_ctx_entry *) context_info_entries_array;
+       lttng_ust_context_info_tls.ctx_entries_len = (*env)->GetArrayLength(env, context_info_entries);
+       context_info_strings_array = (*env)->GetByteArrayElements(env, context_info_strings, &iscopy);
+       lttng_ust_context_info_tls.ctx_strings = context_info_strings_array;
+       lttng_ust_context_info_tls.ctx_strings_len = (*env)->GetArrayLength(env, context_info_strings);
+
+       tracepoint(lttng_log4j, event, msg_cstr, logger_name_cstr,
+                  class_name_cstr, method_name_cstr, file_name_cstr,
+                  line_number, timestamp, loglevel, thread_name_cstr);
+
+       lttng_ust_context_info_tls.ctx_entries = NULL;
+       lttng_ust_context_info_tls.ctx_entries_len = 0;
+       lttng_ust_context_info_tls.ctx_strings = NULL;
+       lttng_ust_context_info_tls.ctx_strings_len = 0;
+       (*env)->ReleaseStringUTFChars(env, msg, msg_cstr);
+       (*env)->ReleaseStringUTFChars(env, logger_name, logger_name_cstr);
+       (*env)->ReleaseStringUTFChars(env, class_name, class_name_cstr);
+       (*env)->ReleaseStringUTFChars(env, method_name, method_name_cstr);
+       (*env)->ReleaseStringUTFChars(env, file_name, file_name_cstr);
+       (*env)->ReleaseStringUTFChars(env, thread_name, thread_name_cstr);
+       (*env)->ReleaseByteArrayElements(env, context_info_entries, context_info_entries_array, 0);
+       (*env)->ReleaseByteArrayElements(env, context_info_strings, context_info_strings_array, 0);
+}