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/*
* Copyright (C) the libgit2 contributors. All rights reserved.
*
* This file is part of libgit2, distributed under the GNU GPL v2 with
* a Linking Exception. For full terms see the included COPYING file.
*/
#include "git2_util.h"
#if !defined(GIT_THREADS)
#define TLSDATA_MAX 16
typedef struct {
void *value;
void (GIT_SYSTEM_CALL *destroy_fn)(void *);
} tlsdata_value;
static tlsdata_value tlsdata_values[TLSDATA_MAX];
static int tlsdata_cnt = 0;
int git_tlsdata_init(git_tlsdata_key *key, void (GIT_SYSTEM_CALL *destroy_fn)(void *))
{
if (tlsdata_cnt >= TLSDATA_MAX)
return -1;
tlsdata_values[tlsdata_cnt].value = NULL;
tlsdata_values[tlsdata_cnt].destroy_fn = destroy_fn;
*key = tlsdata_cnt;
tlsdata_cnt++;
return 0;
}
int git_tlsdata_set(git_tlsdata_key key, void *value)
{
if (key < 0 || key > tlsdata_cnt)
return -1;
tlsdata_values[key].value = value;
return 0;
}
void *git_tlsdata_get(git_tlsdata_key key)
{
if (key < 0 || key > tlsdata_cnt)
return NULL;
return tlsdata_values[key].value;
}
int git_tlsdata_dispose(git_tlsdata_key key)
{
void *value;
void (*destroy_fn)(void *) = NULL;
if (key < 0 || key > tlsdata_cnt)
return -1;
value = tlsdata_values[key].value;
destroy_fn = tlsdata_values[key].destroy_fn;
tlsdata_values[key].value = NULL;
tlsdata_values[key].destroy_fn = NULL;
if (value && destroy_fn)
destroy_fn(value);
return 0;
}
#elif defined(GIT_WIN32)
int git_tlsdata_init(git_tlsdata_key *key, void (GIT_SYSTEM_CALL *destroy_fn)(void *))
{
DWORD fls_index = FlsAlloc(destroy_fn);
if (fls_index == FLS_OUT_OF_INDEXES)
return -1;
*key = fls_index;
return 0;
}
int git_tlsdata_set(git_tlsdata_key key, void *value)
{
if (!FlsSetValue(key, value))
return -1;
return 0;
}
void *git_tlsdata_get(git_tlsdata_key key)
{
return FlsGetValue(key);
}
int git_tlsdata_dispose(git_tlsdata_key key)
{
if (!FlsFree(key))
return -1;
return 0;
}
#elif defined(_POSIX_THREADS)
int git_tlsdata_init(git_tlsdata_key *key, void (GIT_SYSTEM_CALL *destroy_fn)(void *))
{
if (pthread_key_create(key, destroy_fn) != 0)
return -1;
return 0;
}
int git_tlsdata_set(git_tlsdata_key key, void *value)
{
if (pthread_setspecific(key, value) != 0)
return -1;
return 0;
}
void *git_tlsdata_get(git_tlsdata_key key)
{
return pthread_getspecific(key);
}
int git_tlsdata_dispose(git_tlsdata_key key)
{
if (pthread_key_delete(key) != 0)
return -1;
return 0;
}
#else
# error unknown threading model
#endif
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