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builtin-tag.c
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test-chmtime.c
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transport.c
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/* * 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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