mirror of
https://github.com/corda/corda.git
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87b02eb949
Previously, I used a shell script to extract modification date ranges from the Git history, but that was complicated and unreliable, so now every file just gets the same year range in its copyright header. If someone needs to know when a specific file was modified and by whom, they can look at the Git history themselves; no need to include it redundantly in the header.
121 lines
2.4 KiB
C++
121 lines
2.4 KiB
C++
/* Copyright (c) 2008-2013, Avian Contributors
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Permission to use, copy, modify, and/or distribute this software
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for any purpose with or without fee is hereby granted, provided
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that the above copyright notice and this permission notice appear
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in all copies.
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There is NO WARRANTY for this software. See license.txt for
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details. */
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#include "avian/machine.h"
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#include "avian/heapwalk.h"
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using namespace vm;
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namespace {
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namespace local {
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enum {
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Root,
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Size,
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ClassName,
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Push,
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Pop
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};
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void
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write1(FILE* out, uint8_t v)
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{
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size_t n UNUSED = fwrite(&v, 1, 1, out);
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}
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void
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write4(FILE* out, uint32_t v)
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{
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uint8_t b[] = { static_cast<uint8_t>( v >> 24 ),
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static_cast<uint8_t>((v >> 16) & 0xFF),
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static_cast<uint8_t>((v >> 8) & 0xFF),
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static_cast<uint8_t>( v & 0xFF) };
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size_t n UNUSED = fwrite(b, 4, 1, out);
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}
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void
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writeString(FILE* out, int8_t* p, unsigned size)
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{
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write4(out, size);
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size_t n UNUSED = fwrite(p, size, 1, out);
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}
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unsigned
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objectSize(Thread* t, object o)
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{
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return extendedSize(t, o, baseSize(t, o, objectClass(t, o)));
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}
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} // namespace local
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} // namespace
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namespace vm {
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void
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dumpHeap(Thread* t, FILE* out)
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{
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class Visitor: public HeapVisitor {
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public:
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Visitor(Thread* t, FILE* out): t(t), out(out), nextNumber(1) { }
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virtual void root() {
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write1(out, local::Root);
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}
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virtual unsigned visitNew(object p) {
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if (p) {
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unsigned number = nextNumber++;
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local::write4(out, number);
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local::write1(out, local::Size);
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local::write4(out, local::objectSize(t, p));
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if (objectClass(t, p) == type(t, Machine::ClassType)) {
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object name = className(t, p);
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if (name) {
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local::write1(out, local::ClassName);
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local::writeString(out, &byteArrayBody(t, name, 0),
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byteArrayLength(t, name) - 1);
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}
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}
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return number;
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} else {
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return 0;
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}
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}
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virtual void visitOld(object, unsigned number) {
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local::write4(out, number);
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}
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virtual void push(object, unsigned, unsigned) {
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local::write1(out, local::Push);
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}
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virtual void pop() {
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local::write1(out, local::Pop);
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}
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Thread* t;
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FILE* out;
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unsigned nextNumber;
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} visitor(t, out);
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HeapWalker* w = makeHeapWalker(t, &visitor);
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w->visitAllRoots();
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w->dispose();
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}
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} // namespace vm
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