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Revision c308b9c25d54c72977d16155ae04e37f3490d5ac authored by Will Palmer on 17 April 2010, 16:55:26 UTC, committed by Junio C Hamano on 17 April 2010, 18:50:32 UTC 
documentation: clarify direction of core.autocrlf
 
The description for core.autocrlf refers to reads from / writes to
"the filesystem", the only use of this rather ambiguous term, which
technically could be referring to the git object database. (All other
mentions are part of phrases such as "..filesystems (like NFS)..").

Other sections, including the section on core.safecrlf, use the term
"work tree" for the same purpose as the term "the filesystem" is used in
the core.autocrlf section, so that seems like a good alternative, which
makes it clearer what direction the addition/removal of CR characters
occurs in.

Signed-off-by: Will Palmer <wmpalmer@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
1 parent f78683f
Raw File
alloc.c 
/*
 * alloc.c  - specialized allocator for internal objects
 *
 * Copyright (C) 2006 Linus Torvalds
 *
 * The standard malloc/free wastes too much space for objects, partly because
 * it maintains all the allocation infrastructure (which isn't needed, since
 * we never free an object descriptor anyway), but even more because it ends
 * up with maximal alignment because it doesn't know what the object alignment
 * for the new allocation is.
 */
#include "cache.h"
#include "object.h"
#include "blob.h"
#include "tree.h"
#include "commit.h"
#include "tag.h"

#define BLOCKING 1024

#define DEFINE_ALLOCATOR(name, type)				\
static unsigned int name##_allocs;				\
void *alloc_##name##_node(void)					\
{								\
	static int nr;						\
	static type *block;					\
	void *ret;						\
								\
	if (!nr) {						\
		nr = BLOCKING;					\
		block = xmalloc(BLOCKING * sizeof(type));	\
	}							\
	nr--;							\
	name##_allocs++;					\
	ret = block++;						\
	memset(ret, 0, sizeof(type));				\
	return ret;						\
}

union any_object {
	struct object object;
	struct blob blob;
	struct tree tree;
	struct commit commit;
	struct tag tag;
};

DEFINE_ALLOCATOR(blob, struct blob)
DEFINE_ALLOCATOR(tree, struct tree)
DEFINE_ALLOCATOR(commit, struct commit)
DEFINE_ALLOCATOR(tag, struct tag)
DEFINE_ALLOCATOR(object, union any_object)

#ifdef NO_C99_FORMAT
#define SZ_FMT "%u"
#else
#define SZ_FMT "%zu"
#endif

static void report(const char *name, unsigned int count, size_t size)
{
    fprintf(stderr, "%10s: %8u (" SZ_FMT " kB)\n", name, count, size);
}

#undef SZ_FMT

#define REPORT(name)	\
    report(#name, name##_allocs, name##_allocs*sizeof(struct name) >> 10)

void alloc_report(void)
{
	REPORT(blob);
	REPORT(tree);
	REPORT(commit);
	REPORT(tag);
}
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