1 files changed, 185 insertions, 0 deletions
diff --git a/vm/hprof/Hprof.c b/vm/hprof/Hprof.c
new file mode 100644
index 0000000..bcad8b1
--- /dev/null
+++ b/vm/hprof/Hprof.c
@@ -0,0 +1,185 @@
+/*
+ * Copyright (C) 2008 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/*
+ * Preparation and completion of hprof data generation.  The output is
+ * written into two files and then combined.  This is necessary because
+ * we generate some of the data (strings and classes) while we dump the
+ * heap, and some analysis tools require that the class and string data
+ * appear first.
+ */
+#include "Hprof.h"
+
+#include <string.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <sys/time.h>
+#include <time.h>
+
+
+#define kHeadSuffix "-hptemp"
+
+hprof_context_t *
+hprofStartup(const char *outputFileName, int fd, bool directToDdms)
+{
+    hprofStartup_String();
+    hprofStartup_Class();
+#if WITH_HPROF_STACK
+    hprofStartup_StackFrame();
+    hprofStartup_Stack();
+#endif
+
+    hprof_context_t *ctx = malloc(sizeof(*ctx));
+    if (ctx == NULL) {
+        LOGE("hprof: can't allocate context.\n");
+        return NULL;
+    }
+
+    /* pass in name or descriptor of the output file */
+    hprofContextInit(ctx, strdup(outputFileName), fd, false, directToDdms);
+
+    assert(ctx->memFp != NULL);
+
+    return ctx;
+}
+
+/*
+ * Finish up the hprof dump.  Returns true on success.
+ */
+bool
+hprofShutdown(hprof_context_t *tailCtx)
+{
+    /* flush the "tail" portion of the output */
+    hprofFlushCurrentRecord(tailCtx);
+
+    /*
+     * Create a new context struct for the start of the file.  We
+     * heap-allocate it so we can share the "free" function.
+     */
+    hprof_context_t *headCtx = malloc(sizeof(*headCtx));
+    if (headCtx == NULL) {
+        LOGE("hprof: can't allocate context.\n");
+        hprofFreeContext(tailCtx);
+        return false;
+    }
+    hprofContextInit(headCtx, strdup(tailCtx->fileName), tailCtx->fd, true,
+        tailCtx->directToDdms);
+
+    LOGI("hprof: dumping heap strings to \"%s\".\n", tailCtx->fileName);
+    hprofDumpStrings(headCtx);
+    hprofDumpClasses(headCtx);
+
+    /* Write a dummy stack trace record so the analysis
+     * tools don't freak out.
+     */
+    hprofStartNewRecord(headCtx, HPROF_TAG_STACK_TRACE, HPROF_TIME);
+    hprofAddU4ToRecord(&headCtx->curRec, HPROF_NULL_STACK_TRACE);
+    hprofAddU4ToRecord(&headCtx->curRec, HPROF_NULL_THREAD);
+    hprofAddU4ToRecord(&headCtx->curRec, 0);    // no frames
+
+#if WITH_HPROF_STACK
+    hprofDumpStackFrames(headCtx);
+    hprofDumpStacks(headCtx);
+#endif
+
+    hprofFlushCurrentRecord(headCtx);
+
+    hprofShutdown_Class();
+    hprofShutdown_String();
+#if WITH_HPROF_STACK
+    hprofShutdown_Stack();
+    hprofShutdown_StackFrame();
+#endif
+
+    /* flush to ensure memstream pointer and size are updated */
+    fflush(headCtx->memFp);
+    fflush(tailCtx->memFp);
+
+    if (tailCtx->directToDdms) {
+        /* send the data off to DDMS */
+        struct iovec iov[2];
+        iov[0].iov_base = headCtx->fileDataPtr;
+        iov[0].iov_len = headCtx->fileDataSize;
+        iov[1].iov_base = tailCtx->fileDataPtr;
+        iov[1].iov_len = tailCtx->fileDataSize;
+        dvmDbgDdmSendChunkV(CHUNK_TYPE("HPDS"), iov, 2);
+    } else {
+        /*
+         * Open the output file, and copy the head and tail to it.
+         */
+        assert(headCtx->fd == tailCtx->fd);
+
+        int outFd;
+        if (headCtx->fd >= 0) {
+            outFd = dup(headCtx->fd);
+            if (outFd < 0) {
+                LOGE("dup(%d) failed: %s\n", headCtx->fd, strerror(errno));
+                /* continue to fail-handler below */
+            }
+        } else {
+            outFd = open(tailCtx->fileName, O_WRONLY|O_CREAT, 0644);
+            if (outFd < 0) {
+                LOGE("can't open %s: %s\n", headCtx->fileName, strerror(errno));
+                /* continue to fail-handler below */
+            }
+        }
+        if (outFd < 0) {
+            hprofFreeContext(headCtx);
+            hprofFreeContext(tailCtx);
+            return false;
+        }
+
+        int result;
+        result = sysWriteFully(outFd, headCtx->fileDataPtr,
+            headCtx->fileDataSize, "hprof-head");
+        result |= sysWriteFully(outFd, tailCtx->fileDataPtr,
+            tailCtx->fileDataSize, "hprof-tail");
+        close(outFd);
+        if (result != 0) {
+            hprofFreeContext(headCtx);
+            hprofFreeContext(tailCtx);
+            return false;
+        }
+    }
+
+    /* throw out a log message for the benefit of "runhat" */
+    LOGI("hprof: heap dump completed (%dKB)\n",
+        (headCtx->fileDataSize + tailCtx->fileDataSize + 1023) / 1024);
+
+    hprofFreeContext(headCtx);
+    hprofFreeContext(tailCtx);
+
+    return true;
+}
+
+/*
+ * Free any heap-allocated items in "ctx", and then free "ctx" itself.
+ */
+void
+hprofFreeContext(hprof_context_t *ctx)
+{
+    assert(ctx != NULL);
+
+    /* we don't own ctx->fd, do not close */
+
+    if (ctx->memFp != NULL)
+        fclose(ctx->memFp);
+    free(ctx->curRec.body);
+    free(ctx->fileName);
+    free(ctx->fileDataPtr);
+    free(ctx);
+}