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https://github.com/isar/libmdbx.git
synced 2024-12-28 18:28:49 +08:00
mdbx: fix tutorial/sample-mdbx.c
Fix/refine b0dc98bec0281cc0987253d9e498cdb117a80100 Change-Id: Ie5b1cf9453261c5e1cdfc4880ce9dafdcc4545f7
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parent
b0dc98bec0
commit
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2
Makefile
2
Makefile
@ -135,7 +135,7 @@ endif
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ci-rule = ( CC=$$(which $1); if [ -n "$$CC" ]; then \
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echo -n "probe by $2 ($$(readlink -f $$(which $$CC))): " && \
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$(MAKE) clean >$1.log 2>$1.err && \
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$(MAKE) CC=$$(readlink -f $$CC) XCFLAGS="-UNDEBUG -DMDBX_DEBUG=2" check 1>$1.log 2>$1.err && echo "OK" \
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$(MAKE) CC=$$(readlink -f $$CC) XCFLAGS="-UNDEBUG -DMDBX_DEBUG=2 -DLIBMDBX_EXPORTS=1" check 1>$1.log 2>$1.err && echo "OK" \
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|| ( echo "FAILED"; cat $1.err >&2; exit 1 ); \
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else echo "no $2 ($1) for probe"; fi; )
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ci:
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@ -20,17 +20,18 @@
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#include "mdbx.h"
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#include <stdio.h>
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#include <stdlib.h>
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int main(int argc, char *argv[]) {
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(void)argc;
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(void)argv;
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int rc;
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MDBX_env *env;
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MDBX_dbi dbi;
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MDBX_env *env = NULL;
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MDBX_dbi dbi = 0;
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MDBX_val key, data;
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MDBX_txn *txn;
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MDBX_cursor *cursor;
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MDBX_txn *txn = NULL;
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MDBX_cursor *cursor = NULL;
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char sval[32];
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rc = mdbx_env_create(&env);
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@ -41,20 +42,19 @@ int main(int argc, char *argv[]) {
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rc = mdbx_env_open(env, "./example-db",
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MDBX_NOSUBDIR | MDBX_COALESCE | MDBX_LIFORECLAIM, 0664);
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if (rc != MDBX_SUCCESS) {
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mdbx_env_close(env);
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fprintf(stderr, "mdbx_env_open: (%d) %s\n", rc, mdbx_strerror(rc));
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return 0;
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goto bailout;
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}
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rc = mdbx_txn_begin(env, NULL, 0, &txn);
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if (rc != MDBX_SUCCESS) {
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fprintf(stderr, "mdbx_txn_begin: (%d) %s\n", rc, mdbx_strerror(rc));
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goto leave;
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goto bailout;
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}
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rc = mdbx_dbi_open(txn, NULL, 0, &dbi);
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if (rc != MDBX_SUCCESS) {
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fprintf(stderr, "mdbx_dbi_open: (%d) %s\n", rc, mdbx_strerror(rc));
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goto leave;
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goto bailout;
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}
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key.iov_len = sizeof(int);
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@ -66,24 +66,47 @@ int main(int argc, char *argv[]) {
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rc = mdbx_put(txn, dbi, &key, &data, 0);
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if (rc != MDBX_SUCCESS) {
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fprintf(stderr, "mdbx_put: (%d) %s\n", rc, mdbx_strerror(rc));
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goto leave;
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goto bailout;
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}
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rc = mdbx_txn_commit(txn);
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if (rc) {
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fprintf(stderr, "mdbx_txn_commit: (%d) %s\n", rc, mdbx_strerror(rc));
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goto leave;
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goto bailout;
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}
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txn = NULL;
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rc = mdbx_txn_begin(env, NULL, MDBX_RDONLY, &txn);
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if (rc != MDBX_SUCCESS) {
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fprintf(stderr, "mdbx_txn_begin: (%d) %s\n", rc, mdbx_strerror(rc));
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goto bailout;
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}
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rc = mdbx_cursor_open(txn, dbi, &cursor);
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if (rc != MDBX_SUCCESS) {
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fprintf(stderr, "mdbx_cursor_open: (%d) %s\n", rc, mdbx_strerror(rc));
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goto bailout;
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}
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int found = 0;
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while ((rc = mdbx_cursor_get(cursor, &key, &data, MDBX_NEXT)) == 0) {
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printf("key: %p %.*s, data: %p %.*s\n", key.iov_base, (int)key.iov_len,
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(char *)key.iov_base, data.iov_base, (int)data.iov_len,
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(char *)data.iov_base);
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found += 1;
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}
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mdbx_cursor_close(cursor);
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mdbx_txn_abort(txn);
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leave:
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mdbx_dbi_close(env, dbi);
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mdbx_env_close(env);
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return 0;
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if (rc != MDBX_NOTFOUND || found == 0) {
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fprintf(stderr, "mdbx_cursor_get: (%d) %s\n", rc, mdbx_strerror(rc));
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goto bailout;
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} else {
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rc = MDBX_SUCCESS;
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}
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bailout:
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if (cursor)
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mdbx_cursor_close(cursor);
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if (txn)
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mdbx_txn_abort(txn);
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if (dbi)
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mdbx_dbi_close(env, dbi);
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if (env)
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mdbx_env_close(env);
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return (rc != MDBX_SUCCESS) ? EXIT_FAILURE : EXIT_SUCCESS;
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}
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