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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-09 13:34:27 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-09 13:34:27 +0000
commit4dbdc42d9e7c3968ff7f690d00680419c9b8cb0f (patch)
tree47c1d492e9c956c1cd2b74dbd3b9d8b0db44dc4e /mem-pool.h
parentInitial commit. (diff)
downloadgit-4dbdc42d9e7c3968ff7f690d00680419c9b8cb0f.tar.xz
git-4dbdc42d9e7c3968ff7f690d00680419c9b8cb0f.zip
Adding upstream version 1:2.43.0.upstream/1%2.43.0
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'mem-pool.h')
-rw-r--r--mem-pool.h63
1 files changed, 63 insertions, 0 deletions
diff --git a/mem-pool.h b/mem-pool.h
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+#ifndef MEM_POOL_H
+#define MEM_POOL_H
+
+struct mp_block {
+ struct mp_block *next_block;
+ char *next_free;
+ char *end;
+ uintmax_t space[FLEX_ARRAY]; /* more */
+};
+
+struct mem_pool {
+ struct mp_block *mp_block;
+
+ /*
+ * The amount of available memory to grow the pool by.
+ * This size does not include the overhead for the mp_block.
+ */
+ size_t block_alloc;
+
+ /* The total amount of memory allocated by the pool. */
+ size_t pool_alloc;
+};
+
+/*
+ * Initialize mem_pool with specified initial size.
+ */
+void mem_pool_init(struct mem_pool *pool, size_t initial_size);
+
+/*
+ * Discard all the memory the memory pool is responsible for.
+ */
+void mem_pool_discard(struct mem_pool *pool, int invalidate_memory);
+
+/*
+ * Alloc memory from the mem_pool.
+ */
+void *mem_pool_alloc(struct mem_pool *pool, size_t len);
+
+/*
+ * Allocate and zero memory from the memory pool.
+ */
+void *mem_pool_calloc(struct mem_pool *pool, size_t count, size_t size);
+
+/*
+ * Allocate memory from the memory pool and copy str into it.
+ */
+char *mem_pool_strdup(struct mem_pool *pool, const char *str);
+char *mem_pool_strndup(struct mem_pool *pool, const char *str, size_t len);
+
+/*
+ * Move the memory associated with the 'src' pool to the 'dst' pool. The 'src'
+ * pool will be empty and not contain any memory. It still needs to be free'd
+ * with a call to `mem_pool_discard`.
+ */
+void mem_pool_combine(struct mem_pool *dst, struct mem_pool *src);
+
+/*
+ * Check if a memory pointed at by 'mem' is part of the range of
+ * memory managed by the specified mem_pool.
+ */
+int mem_pool_contains(struct mem_pool *pool, void *mem);
+
+#endif