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authorStefan Hajnoczi <stefanha@linux.vnet.ibm.com>2010-05-22 19:24:51 +0100
committerAnthony Liguori <aliguori@us.ibm.com>2010-09-09 16:22:44 -0500
commit26f7227bfe9a9abee3fe5190cbfc35dd876e06d9 (patch)
tree8faec109ee82f27d466787dbfa9620682fb76d6e /simpletrace.h
parent94a420b170b3e997a185a4148accc87bdcd18156 (diff)
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trace: Add simple built-in tracing backend
This patch adds a simple tracer which produces binary trace files. To try out the simple backend: $ ./configure --trace-backend=simple $ make After running QEMU you can pretty-print the trace: $ ./simpletrace.py trace-events trace.log The output of simpletrace.py looks like this: qemu_realloc 0.699 ptr=0x24363f0 size=0x3 newptr=0x24363f0 qemu_free 0.768 ptr=0x24363f0 ^ ^---- timestamp delta (us) |____ trace event name Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com> trace: Make trace record fields 64-bit Explicitly use 64-bit fields in trace records so that timestamps and magic numbers work for 32-bit host builds. Includes fixes from Prerna Saxena <prerna@linux.vnet.ibm.com>. Signed-off-by: Prerna Saxena <prerna@linux.vnet.ibm.com> Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
Diffstat (limited to 'simpletrace.h')
-rw-r--r--simpletrace.h26
1 files changed, 26 insertions, 0 deletions
diff --git a/simpletrace.h b/simpletrace.h
new file mode 100644
index 0000000..7d0661b
--- /dev/null
+++ b/simpletrace.h
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+/*
+ * Simple trace backend
+ *
+ * Copyright IBM, Corp. 2010
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2. See
+ * the COPYING file in the top-level directory.
+ *
+ */
+
+#ifndef SIMPLETRACE_H
+#define SIMPLETRACE_H
+
+#include <stdint.h>
+
+typedef uint64_t TraceEventID;
+
+void trace0(TraceEventID event);
+void trace1(TraceEventID event, uint64_t x1);
+void trace2(TraceEventID event, uint64_t x1, uint64_t x2);
+void trace3(TraceEventID event, uint64_t x1, uint64_t x2, uint64_t x3);
+void trace4(TraceEventID event, uint64_t x1, uint64_t x2, uint64_t x3, uint64_t x4);
+void trace5(TraceEventID event, uint64_t x1, uint64_t x2, uint64_t x3, uint64_t x4, uint64_t x5);
+void trace6(TraceEventID event, uint64_t x1, uint64_t x2, uint64_t x3, uint64_t x4, uint64_t x5, uint64_t x6);
+
+#endif /* SIMPLETRACE_H */