/test-genrandom
/test-index-version
/test-match-trees
+/test-obj-pool
/test-parse-options
/test-path-utils
/test-run-command
TEST_PROGRAMS_NEED_X += test-dump-cache-tree
TEST_PROGRAMS_NEED_X += test-genrandom
TEST_PROGRAMS_NEED_X += test-match-trees
+TEST_PROGRAMS_NEED_X += test-obj-pool
TEST_PROGRAMS_NEED_X += test-parse-options
TEST_PROGRAMS_NEED_X += test-path-utils
TEST_PROGRAMS_NEED_X += test-run-command
xdiff/xinclude.h xdiff/xmacros.h xdiff/xdiff.h xdiff/xtypes.h \
xdiff/xutils.h xdiff/xprepare.h xdiff/xdiffi.h xdiff/xemit.h
-$(VCSSVN_OBJS):
+$(VCSSVN_OBJS): \
+ vcs-svn/obj_pool.h
endif
exec_cmd.s exec_cmd.o: EXTRA_CPPFLAGS = \
--- /dev/null
+#!/bin/sh
+
+test_description='check infrastructure for svn importer'
+
+. ./test-lib.sh
+uint32_max=4294967295
+
+test_expect_success 'obj pool: store data' '
+ cat <<-\EOF >expected &&
+ 0
+ 1
+ EOF
+
+ test-obj-pool <<-\EOF >actual &&
+ alloc one 16
+ set one 13
+ test one 13
+ reset one
+ EOF
+ test_cmp expected actual
+'
+
+test_expect_success 'obj pool: NULL is offset ~0' '
+ echo "$uint32_max" >expected &&
+ echo null one | test-obj-pool >actual &&
+ test_cmp expected actual
+'
+
+test_expect_success 'obj pool: out-of-bounds access' '
+ cat <<-EOF >expected &&
+ 0
+ 0
+ $uint32_max
+ $uint32_max
+ 16
+ 20
+ $uint32_max
+ EOF
+
+ test-obj-pool <<-\EOF >actual &&
+ alloc one 16
+ alloc two 16
+ offset one 20
+ offset two 20
+ alloc one 5
+ offset one 20
+ free one 1
+ offset one 20
+ reset one
+ reset two
+ EOF
+ test_cmp expected actual
+'
+
+test_expect_success 'obj pool: high-water mark' '
+ cat <<-\EOF >expected &&
+ 0
+ 0
+ 10
+ 20
+ 20
+ 20
+ EOF
+
+ test-obj-pool <<-\EOF >actual &&
+ alloc one 10
+ committed one
+ alloc one 10
+ commit one
+ committed one
+ alloc one 10
+ free one 20
+ committed one
+ reset one
+ EOF
+ test_cmp expected actual
+'
+
+test_done
--- /dev/null
+/*
+ * test-obj-pool.c: code to exercise the svn importer's object pool
+ */
+
+#include "cache.h"
+#include "vcs-svn/obj_pool.h"
+
+enum pool { POOL_ONE, POOL_TWO };
+obj_pool_gen(one, int, 1)
+obj_pool_gen(two, int, 4096)
+
+static uint32_t strtouint32(const char *s)
+{
+ char *end;
+ uintmax_t n = strtoumax(s, &end, 10);
+ if (*s == '\0' || (*end != '\n' && *end != '\0'))
+ die("invalid offset: %s", s);
+ return (uint32_t) n;
+}
+
+static void handle_command(const char *command, enum pool pool, const char *arg)
+{
+ switch (*command) {
+ case 'a':
+ if (!prefixcmp(command, "alloc ")) {
+ uint32_t n = strtouint32(arg);
+ printf("%"PRIu32"\n",
+ pool == POOL_ONE ?
+ one_alloc(n) : two_alloc(n));
+ return;
+ }
+ case 'c':
+ if (!prefixcmp(command, "commit ")) {
+ pool == POOL_ONE ? one_commit() : two_commit();
+ return;
+ }
+ if (!prefixcmp(command, "committed ")) {
+ printf("%"PRIu32"\n",
+ pool == POOL_ONE ?
+ one_pool.committed : two_pool.committed);
+ return;
+ }
+ case 'f':
+ if (!prefixcmp(command, "free ")) {
+ uint32_t n = strtouint32(arg);
+ pool == POOL_ONE ? one_free(n) : two_free(n);
+ return;
+ }
+ case 'n':
+ if (!prefixcmp(command, "null ")) {
+ printf("%"PRIu32"\n",
+ pool == POOL_ONE ?
+ one_offset(NULL) : two_offset(NULL));
+ return;
+ }
+ case 'o':
+ if (!prefixcmp(command, "offset ")) {
+ uint32_t n = strtouint32(arg);
+ printf("%"PRIu32"\n",
+ pool == POOL_ONE ?
+ one_offset(one_pointer(n)) :
+ two_offset(two_pointer(n)));
+ return;
+ }
+ case 'r':
+ if (!prefixcmp(command, "reset ")) {
+ pool == POOL_ONE ? one_reset() : two_reset();
+ return;
+ }
+ case 's':
+ if (!prefixcmp(command, "set ")) {
+ uint32_t n = strtouint32(arg);
+ if (pool == POOL_ONE)
+ *one_pointer(n) = 1;
+ else
+ *two_pointer(n) = 1;
+ return;
+ }
+ case 't':
+ if (!prefixcmp(command, "test ")) {
+ uint32_t n = strtouint32(arg);
+ printf("%d\n", pool == POOL_ONE ?
+ *one_pointer(n) : *two_pointer(n));
+ return;
+ }
+ default:
+ die("unrecognized command: %s", command);
+ }
+}
+
+static void handle_line(const char *line)
+{
+ const char *arg = strchr(line, ' ');
+ enum pool pool;
+
+ if (arg && !prefixcmp(arg + 1, "one"))
+ pool = POOL_ONE;
+ else if (arg && !prefixcmp(arg + 1, "two"))
+ pool = POOL_TWO;
+ else
+ die("no pool specified: %s", line);
+
+ handle_command(line, pool, arg + strlen("one "));
+}
+
+int main(int argc, char *argv[])
+{
+ struct strbuf sb = STRBUF_INIT;
+ if (argc != 1)
+ usage("test-obj-str < script");
+
+ while (strbuf_getline(&sb, stdin, '\n') != EOF)
+ handle_line(sb.buf);
+ strbuf_release(&sb);
+ return 0;
+}
--- /dev/null
+/*
+ * Licensed under a two-clause BSD-style license.
+ * See LICENSE for details.
+ */
+
+#ifndef OBJ_POOL_H_
+#define OBJ_POOL_H_
+
+#include "git-compat-util.h"
+
+#define MAYBE_UNUSED __attribute__((__unused__))
+
+#define obj_pool_gen(pre, obj_t, initial_capacity) \
+static struct { \
+ uint32_t committed; \
+ uint32_t size; \
+ uint32_t capacity; \
+ obj_t *base; \
+} pre##_pool = {0, 0, 0, NULL}; \
+static MAYBE_UNUSED uint32_t pre##_alloc(uint32_t count) \
+{ \
+ uint32_t offset; \
+ if (pre##_pool.size + count > pre##_pool.capacity) { \
+ while (pre##_pool.size + count > pre##_pool.capacity) \
+ if (pre##_pool.capacity) \
+ pre##_pool.capacity *= 2; \
+ else \
+ pre##_pool.capacity = initial_capacity; \
+ pre##_pool.base = realloc(pre##_pool.base, \
+ pre##_pool.capacity * sizeof(obj_t)); \
+ } \
+ offset = pre##_pool.size; \
+ pre##_pool.size += count; \
+ return offset; \
+} \
+static MAYBE_UNUSED void pre##_free(uint32_t count) \
+{ \
+ pre##_pool.size -= count; \
+} \
+static MAYBE_UNUSED uint32_t pre##_offset(obj_t *obj) \
+{ \
+ return obj == NULL ? ~0 : obj - pre##_pool.base; \
+} \
+static MAYBE_UNUSED obj_t *pre##_pointer(uint32_t offset) \
+{ \
+ return offset >= pre##_pool.size ? NULL : &pre##_pool.base[offset]; \
+} \
+static MAYBE_UNUSED void pre##_commit(void) \
+{ \
+ pre##_pool.committed = pre##_pool.size; \
+} \
+static MAYBE_UNUSED void pre##_reset(void) \
+{ \
+ free(pre##_pool.base); \
+ pre##_pool.base = NULL; \
+ pre##_pool.size = 0; \
+ pre##_pool.capacity = 0; \
+ pre##_pool.committed = 0; \
+}
+
+#endif
projects / ~andy / git / commitdiff