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mdbx: add mdbx_strerror_r().

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This commit is contained in:
Leo Yuriev 2017-02-28 16:54:10 +03:00
parent 8fb2523276
commit 57dc59ecfb
2 changed files with 54 additions and 38 deletions
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39
mdbx.c
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@ -1328,7 +1328,7 @@ static pthread_mutex_t tsan_mutex = PTHREAD_MUTEX_INITIALIZER;
#endif
/** Return the library version info. */
char *__cold mdbx_version(int *major, int *minor, int *patch) {
const char *mdbx_version(int *major, int *minor, int *patch) {
if (major)
*major = MDB_VERSION_MAJOR;
if (minor)
@ -1338,8 +1338,9 @@ char *__cold mdbx_version(int *major, int *minor, int *patch) {
return MDB_VERSION_STRING;
}
/** Table of descriptions for LMDB @ref errors */
static char *const mdbx_errstr[] = {
static const char *__mdbx_strerr(int err) {
/* Table of descriptions for LMDB errors */
static const char *const tbl[] = {
"MDB_KEYEXIST: Key/data pair already exists",
"MDB_NOTFOUND: No matching key/data pair found",
"MDB_PAGE_NOTFOUND: Requested page not found",
@ -1364,19 +1365,33 @@ static char *const mdbx_errstr[] = {
"DUPFIXED size",
"MDB_BAD_DBI: The specified DBI handle was closed/changed unexpectedly",
"MDB_PROBLEM: Unexpected problem - txn should abort",
};
char *__cold mdbx_strerror(int err) {
int i;
if (!err)
return ("Successful return: 0");
};
if (err >= MDB_KEYEXIST && err <= MDB_LAST_ERRCODE) {
i = err - MDB_KEYEXIST;
return mdbx_errstr[i];
int i = err - MDB_KEYEXIST;
return tbl[i];
}
return strerror(err);
switch (err) {
case MDB_SUCCESS:
return "Successful return: 0";
case MDBX_EMULTIVAL:
return "";
case MDBX_EBADSIGN:
return "";
default:
return NULL;
}
}
const char *mdbx_strerror_r(int err, char *buf, size_t buflen) {
const char *msg = __mdbx_strerr(err);
return msg ? msg : strerror_r(err, buf, buflen);
}
const char *__cold mdbx_strerror(int err) {
const char *msg = __mdbx_strerr(err);
return msg ? msg : strerror(err);
}
#if MDBX_MODE_ENABLED

5
mdbx.h
View File

@ -343,7 +343,7 @@ typedef struct MDBX_envinfo {
* here
* Returns "version string" The library version as a string
*/
char *mdbx_version(int *major, int *minor, int *patch);
const char *mdbx_version(int *major, int *minor, int *patch);
/* Return a string describing a given error code.
*
@ -355,7 +355,8 @@ char *mdbx_version(int *major, int *minor, int *patch);
* [in] err The error code
* Returns "error message" The description of the error
*/
char *mdbx_strerror(int err);
const char *mdbx_strerror(int err);
const char *mdbx_strerror_r(int err, char *buf, size_t buflen);
/* Create an LMDB environment handle.
*