From ba2fe0e9499d718f14e4a1321008157d4e0a2a92 Mon Sep 17 00:00:00 2001 From: Brent Cook Date: Sun, 11 Nov 2018 09:06:13 -0600 Subject: add simple Windows lock implementation --- crypto/crypto_lock_win.c | 53 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 53 insertions(+) create mode 100644 crypto/crypto_lock_win.c diff --git a/crypto/crypto_lock_win.c b/crypto/crypto_lock_win.c new file mode 100644 index 0000000..47c3dcc --- /dev/null +++ b/crypto/crypto_lock_win.c @@ -0,0 +1,53 @@ +/* $OpenBSD: crypto_lock.c,v 1.1 2018/11/11 06:41:28 bcook Exp $ */ +/* + * Copyright (c) 2018 Brent Cook + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +#include + +static HANDLE locks[CRYPTO_NUM_LOCKS]; + +void +crypto_init_locks(void) +{ + int i; + + for (i = 0; i < CRYPTO_NUM_LOCKS; i++) + locks[i] = CreateMutex(NULL, FALSE, NULL); +} + +void +CRYPTO_lock(int mode, int type, const char *file, int line) +{ + if (type < 0 || type >= CRYPTO_NUM_LOCKS) + return; + + if (mode & CRYPTO_LOCK) + WaitForSingleObject(locks[type], INFINITE); + else + ReleaseMutex(locks[type]); +} + +int +CRYPTO_add_lock(int *pointer, int amount, int type, const char *file, + int line) +{ + int ret = 0; + CRYPTO_lock(CRYPTO_LOCK|CRYPTO_WRITE, type, file, line); + ret = *pointer + amount; + *pointer = ret; + CRYPTO_lock(CRYPTO_UNLOCK|CRYPTO_WRITE, type, file, line); + return (ret); +} -- cgit v1.2.3-55-g6feb