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Diffstat (limited to 'src/share/back/timing.c')
-rw-r--r-- | src/share/back/timing.c | 104 |
1 files changed, 104 insertions, 0 deletions
diff --git a/src/share/back/timing.c b/src/share/back/timing.c new file mode 100644 index 000000000..f49a30f63 --- /dev/null +++ b/src/share/back/timing.c @@ -0,0 +1,104 @@ +/* + * Copyright (c) 1998, 2004, Oracle and/or its affiliates. All rights reserved. + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. + * + * This code is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 only, as + * published by the Free Software Foundation. Oracle designates this + * particular file as subject to the "Classpath" exception as provided + * by Oracle in the LICENSE file that accompanied this code. + * + * This code is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * version 2 for more details (a copy is included in the LICENSE file that + * accompanied this code). + * + * You should have received a copy of the GNU General Public License version + * 2 along with this work; if not, write to the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. + * + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA + * or visit www.oracle.com if you need additional information or have any + * questions. + */ + +#include "timing.h" + +#include "error_messages.h" +#include "JDWP.h" +#include "outStream.h" +#include "util.h" + +// ANDROID-CHANGED: This whole file + +// This system stores cmd processing timing and sends them to the debugger +// to generate profiling stats. + +typedef struct Timing { + jlong start_ns; + jlong duration_ns; + jint id; + jint cmd_set; + jint cmd; +} Timing; + +static const jint MAX_TIMINGS = 500; +static Timing timings[MAX_TIMINGS]; +static jint numTimings; + +void timings_startCmd(jint id, jint cmd_set, jint cmd) { + timings[numTimings].id = id; + timings[numTimings].cmd_set = cmd_set; + timings[numTimings].cmd = cmd; + timings[numTimings].start_ns = nsTime(); +} + +void timings_endCmd() { + timings[numTimings].duration_ns = nsTime() - timings[numTimings].start_ns; + numTimings++; + + if (numTimings == MAX_TIMINGS) { + timings_flush(); + } +} + +// Return the size of the ARTT chunk +static jint getChunkSize() { + jint size = 0; + size += sizeof(jint); // version + size += sizeof(jint); // num timing entries. + + size += numTimings * (sizeof(jint) * 3 + sizeof(jlong) * 2); // entries + return size; +} + +void timings_flush() { + // Don't even waste a packet if we know it will contain no payload. + if (numTimings == 0) { + return; + } + + PacketOutputStream packet; + + outStream_initCommand(&packet, uniqueID(), 0, JDWP_COMMAND_SET(DDM), JDWP_COMMAND(DDM, Chunk)); + + outStream_writeInt(&packet, 'A' << 24 | 'R' << 16 | 'T' << 8 | 'T');// DDM chunk type + outStream_writeInt(&packet, getChunkSize()); // DDM chunk length + + outStream_writeInt(&packet, 1); //version + outStream_writeInt(&packet, numTimings); // num timing entries + + for(int i=0 ; i < numTimings ; i++) { + outStream_writeInt(&packet, timings[i].id); + outStream_writeInt(&packet, timings[i].cmd_set); + outStream_writeInt(&packet, timings[i].cmd); + outStream_writeLong(&packet, timings[i].start_ns); + outStream_writeLong(&packet, timings[i].duration_ns); + } + outStream_sendCommand(&packet); + outStream_destroy(&packet); + + numTimings = 0; +} + |