Put all common code in a subdirectory.

1 files changed, 303 insertions, 0 deletions

diff --git a/common/trace_writer.cpp b/common/trace_writer.cpp
new file mode 100644
index 0000000..5a5f1f7
--- /dev/null
+++ b/common/trace_writer.cpp
@@ -0,0 +1,303 @@
+/**************************************************************************
+ *
+ * Copyright 2007-2009 VMware, Inc.
+ * All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ **************************************************************************/
+
+
+#include <assert.h>
+#include <stdarg.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "os.hpp"
+#include "trace_writer.hpp"
+#include "trace_snappyfile.hpp"
+#include "trace_format.hpp"
+
+
+namespace Trace {
+
+
+Writer::Writer() :
+    call_no(0)
+{
+    m_file = new Trace::SnappyFile;
+    close();
+}
+
+Writer::~Writer()
+{
+    close();
+    delete m_file;
+    m_file = NULL;
+}
+
+void
+Writer::close(void) {
+    m_file->close();
+}
+
+bool
+Writer::open(const char *filename) {
+    close();
+
+    if (!m_file->open(filename, File::Write)) {
+        return false;
+    }
+
+    call_no = 0;
+    functions.clear();
+    structs.clear();
+    enums.clear();
+    bitmasks.clear();
+
+    _writeUInt(TRACE_VERSION);
+
+    return true;
+}
+
+void inline
+Writer::_write(const void *sBuffer, size_t dwBytesToWrite) {
+    m_file->write(sBuffer, dwBytesToWrite);
+}
+
+void inline
+Writer::_writeByte(char c) {
+    _write(&c, 1);
+}
+
+void inline
+Writer::_writeUInt(unsigned long long value) {
+    char buf[2 * sizeof value];
+    unsigned len;
+
+    len = 0;
+    do {
+        assert(len < sizeof buf);
+        buf[len] = 0x80 | (value & 0x7f);
+        value >>= 7;
+        ++len;
+    } while (value);
+
+    assert(len);
+    buf[len - 1] &= 0x7f;
+
+    _write(buf, len);
+}
+
+void inline
+Writer::_writeFloat(float value) {
+    assert(sizeof value == 4);
+    _write((const char *)&value, sizeof value);
+}
+
+void inline
+Writer::_writeDouble(double value) {
+    assert(sizeof value == 8);
+    _write((const char *)&value, sizeof value);
+}
+
+void inline
+Writer::_writeString(const char *str) {
+    size_t len = strlen(str);
+    _writeUInt(len);
+    _write(str, len);
+}
+
+inline bool lookup(std::vector<bool> &map, size_t index) {
+    if (index >= map.size()) {
+        map.resize(index + 1);
+        return false;
+    } else {
+        return map[index];
+    }
+}
+
+unsigned Writer::beginEnter(const FunctionSig *sig) {
+    _writeByte(Trace::EVENT_ENTER);
+    _writeUInt(sig->id);
+    if (!lookup(functions, sig->id)) {
+        _writeString(sig->name);
+        _writeUInt(sig->num_args);
+        for (unsigned i = 0; i < sig->num_args; ++i) {
+            _writeString(sig->arg_names[i]);
+        }
+        functions[sig->id] = true;
+    }
+
+    return call_no++;
+}
+
+void Writer::endEnter(void) {
+    _writeByte(Trace::CALL_END);
+}
+
+void Writer::beginLeave(unsigned call) {
+    _writeByte(Trace::EVENT_LEAVE);
+    _writeUInt(call);
+}
+
+void Writer::endLeave(void) {
+    _writeByte(Trace::CALL_END);
+}
+
+void Writer::beginArg(unsigned index) {
+    _writeByte(Trace::CALL_ARG);
+    _writeUInt(index);
+}
+
+void Writer::beginReturn(void) {
+    _writeByte(Trace::CALL_RET);
+}
+
+void Writer::beginArray(size_t length) {
+    _writeByte(Trace::TYPE_ARRAY);
+    _writeUInt(length);
+}
+
+void Writer::beginStruct(const StructSig *sig) {
+    _writeByte(Trace::TYPE_STRUCT);
+    _writeUInt(sig->id);
+    if (!lookup(structs, sig->id)) {
+        _writeString(sig->name);
+        _writeUInt(sig->num_members);
+        for (unsigned i = 0; i < sig->num_members; ++i) {
+            _writeString(sig->member_names[i]);
+        }
+        structs[sig->id] = true;
+    }
+}
+
+void Writer::writeBool(bool value) {
+    _writeByte(value ? Trace::TYPE_TRUE : Trace::TYPE_FALSE);
+}
+
+void Writer::writeSInt(signed long long value) {
+    if (value < 0) {
+        _writeByte(Trace::TYPE_SINT);
+        _writeUInt(-value);
+    } else {
+        _writeByte(Trace::TYPE_UINT);
+        _writeUInt(value);
+    }
+}
+
+void Writer::writeUInt(unsigned long long value) {
+    _writeByte(Trace::TYPE_UINT);
+    _writeUInt(value);
+}
+
+void Writer::writeFloat(float value) {
+    _writeByte(Trace::TYPE_FLOAT);
+    _writeFloat(value);
+}
+
+void Writer::writeDouble(double value) {
+    _writeByte(Trace::TYPE_DOUBLE);
+    _writeDouble(value);
+}
+
+void Writer::writeString(const char *str) {
+    if (!str) {
+        Writer::writeNull();
+        return;
+    }
+    _writeByte(Trace::TYPE_STRING);
+    _writeString(str);
+}
+
+void Writer::writeString(const char *str, size_t len) {
+    if (!str) {
+        Writer::writeNull();
+        return;
+    }
+    _writeByte(Trace::TYPE_STRING);
+    _writeUInt(len);
+    _write(str, len);
+}
+
+void Writer::writeWString(const wchar_t *str) {
+    if (!str) {
+        Writer::writeNull();
+        return;
+    }
+    _writeByte(Trace::TYPE_STRING);
+    _writeString("<wide-string>");
+}
+
+void Writer::writeBlob(const void *data, size_t size) {
+    if (!data) {
+        Writer::writeNull();
+        return;
+    }
+    _writeByte(Trace::TYPE_BLOB);
+    _writeUInt(size);
+    if (size) {
+        _write(data, size);
+    }
+}
+
+void Writer::writeEnum(const EnumSig *sig) {
+    _writeByte(Trace::TYPE_ENUM);
+    _writeUInt(sig->id);
+    if (!lookup(enums, sig->id)) {
+        _writeString(sig->name);
+        Writer::writeSInt(sig->value);
+        enums[sig->id] = true;
+    }
+}
+
+void Writer::writeBitmask(const BitmaskSig *sig, unsigned long long value) {
+    _writeByte(Trace::TYPE_BITMASK);
+    _writeUInt(sig->id);
+    if (!lookup(bitmasks, sig->id)) {
+        _writeUInt(sig->num_flags);
+        for (unsigned i = 0; i < sig->num_flags; ++i) {
+            if (i != 0 && sig->flags[i].value == 0) {
+                OS::DebugMessage("apitrace: warning: sig %s is zero but is not first flag\n", sig->flags[i].name);
+            }
+            _writeString(sig->flags[i].name);
+            _writeUInt(sig->flags[i].value);
+        }
+        bitmasks[sig->id] = true;
+    }
+    _writeUInt(value);
+}
+
+void Writer::writeNull(void) {
+    _writeByte(Trace::TYPE_NULL);
+}
+
+void Writer::writeOpaque(const void *addr) {
+    if (!addr) {
+        Writer::writeNull();
+        return;
+    }
+    _writeByte(Trace::TYPE_OPAQUE);
+    _writeUInt((size_t)addr);
+}
+
+
+} /* namespace Trace */
+