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authordeshevoy <[email protected]>2022-02-10 16:46:56 +0300
committerDaniil Cherednik <[email protected]>2022-02-10 16:46:56 +0300
commite988f30484abe5fdeedcc7a5d3c226c01a21800c (patch)
tree0a217b173aabb57b7e51f8a169989b1a3e0309fe /contrib/libs/openssl/crypto/async/async.c
parent33ee501c05d3f24036ae89766a858930ae66c548 (diff)
Restoring authorship annotation for <[email protected]>. Commit 1 of 2.
Diffstat (limited to 'contrib/libs/openssl/crypto/async/async.c')
-rw-r--r--contrib/libs/openssl/crypto/async/async.c898
1 files changed, 449 insertions, 449 deletions
diff --git a/contrib/libs/openssl/crypto/async/async.c b/contrib/libs/openssl/crypto/async/async.c
index 326015c605e..125b78c55a2 100644
--- a/contrib/libs/openssl/crypto/async/async.c
+++ b/contrib/libs/openssl/crypto/async/async.c
@@ -1,451 +1,451 @@
-/*
- * Copyright 2015-2018 The OpenSSL Project Authors. All Rights Reserved.
- *
- * Licensed under the OpenSSL license (the "License"). You may not use
- * this file except in compliance with the License. You can obtain a copy
- * in the file LICENSE in the source distribution or at
- * https://www.openssl.org/source/license.html
- */
-
-/*
- * Without this we start getting longjmp crashes because it thinks we're jumping
- * up the stack when in fact we are jumping to an entirely different stack. The
- * cost of this is not having certain buffer overrun/underrun checks etc for
- * this source file :-(
- */
-#undef _FORTIFY_SOURCE
-
-/* This must be the first #include file */
+/*
+ * Copyright 2015-2018 The OpenSSL Project Authors. All Rights Reserved.
+ *
+ * Licensed under the OpenSSL license (the "License"). You may not use
+ * this file except in compliance with the License. You can obtain a copy
+ * in the file LICENSE in the source distribution or at
+ * https://www.openssl.org/source/license.html
+ */
+
+/*
+ * Without this we start getting longjmp crashes because it thinks we're jumping
+ * up the stack when in fact we are jumping to an entirely different stack. The
+ * cost of this is not having certain buffer overrun/underrun checks etc for
+ * this source file :-(
+ */
+#undef _FORTIFY_SOURCE
+
+/* This must be the first #include file */
#include "async_local.h"
-
-#include <openssl/err.h>
+
+#include <openssl/err.h>
#include "crypto/cryptlib.h"
-#include <string.h>
-
-#define ASYNC_JOB_RUNNING 0
-#define ASYNC_JOB_PAUSING 1
-#define ASYNC_JOB_PAUSED 2
-#define ASYNC_JOB_STOPPING 3
-
-static CRYPTO_THREAD_LOCAL ctxkey;
-static CRYPTO_THREAD_LOCAL poolkey;
-
-static async_ctx *async_ctx_new(void)
-{
- async_ctx *nctx;
-
- if (!ossl_init_thread_start(OPENSSL_INIT_THREAD_ASYNC))
- return NULL;
-
- nctx = OPENSSL_malloc(sizeof(*nctx));
- if (nctx == NULL) {
- ASYNCerr(ASYNC_F_ASYNC_CTX_NEW, ERR_R_MALLOC_FAILURE);
- goto err;
- }
-
- async_fibre_init_dispatcher(&nctx->dispatcher);
- nctx->currjob = NULL;
- nctx->blocked = 0;
- if (!CRYPTO_THREAD_set_local(&ctxkey, nctx))
- goto err;
-
- return nctx;
-err:
- OPENSSL_free(nctx);
-
- return NULL;
-}
-
-async_ctx *async_get_ctx(void)
-{
- return (async_ctx *)CRYPTO_THREAD_get_local(&ctxkey);
-}
-
-static int async_ctx_free(void)
-{
- async_ctx *ctx;
-
- ctx = async_get_ctx();
-
- if (!CRYPTO_THREAD_set_local(&ctxkey, NULL))
- return 0;
-
- OPENSSL_free(ctx);
-
- return 1;
-}
-
-static ASYNC_JOB *async_job_new(void)
-{
- ASYNC_JOB *job = NULL;
-
- job = OPENSSL_zalloc(sizeof(*job));
- if (job == NULL) {
- ASYNCerr(ASYNC_F_ASYNC_JOB_NEW, ERR_R_MALLOC_FAILURE);
- return NULL;
- }
-
- job->status = ASYNC_JOB_RUNNING;
-
- return job;
-}
-
-static void async_job_free(ASYNC_JOB *job)
-{
- if (job != NULL) {
- OPENSSL_free(job->funcargs);
- async_fibre_free(&job->fibrectx);
- OPENSSL_free(job);
- }
-}
-
-static ASYNC_JOB *async_get_pool_job(void) {
- ASYNC_JOB *job;
- async_pool *pool;
-
- pool = (async_pool *)CRYPTO_THREAD_get_local(&poolkey);
- if (pool == NULL) {
- /*
- * Pool has not been initialised, so init with the defaults, i.e.
- * no max size and no pre-created jobs
- */
- if (ASYNC_init_thread(0, 0) == 0)
- return NULL;
- pool = (async_pool *)CRYPTO_THREAD_get_local(&poolkey);
- }
-
- job = sk_ASYNC_JOB_pop(pool->jobs);
- if (job == NULL) {
- /* Pool is empty */
- if ((pool->max_size != 0) && (pool->curr_size >= pool->max_size))
- return NULL;
-
- job = async_job_new();
- if (job != NULL) {
- if (! async_fibre_makecontext(&job->fibrectx)) {
- async_job_free(job);
- return NULL;
- }
- pool->curr_size++;
- }
- }
- return job;
-}
-
-static void async_release_job(ASYNC_JOB *job) {
- async_pool *pool;
-
- pool = (async_pool *)CRYPTO_THREAD_get_local(&poolkey);
- OPENSSL_free(job->funcargs);
- job->funcargs = NULL;
- sk_ASYNC_JOB_push(pool->jobs, job);
-}
-
-void async_start_func(void)
-{
- ASYNC_JOB *job;
- async_ctx *ctx = async_get_ctx();
-
- while (1) {
- /* Run the job */
- job = ctx->currjob;
- job->ret = job->func(job->funcargs);
-
- /* Stop the job */
- job->status = ASYNC_JOB_STOPPING;
- if (!async_fibre_swapcontext(&job->fibrectx,
- &ctx->dispatcher, 1)) {
- /*
- * Should not happen. Getting here will close the thread...can't do
- * much about it
- */
- ASYNCerr(ASYNC_F_ASYNC_START_FUNC, ASYNC_R_FAILED_TO_SWAP_CONTEXT);
- }
- }
-}
-
-int ASYNC_start_job(ASYNC_JOB **job, ASYNC_WAIT_CTX *wctx, int *ret,
- int (*func)(void *), void *args, size_t size)
-{
- async_ctx *ctx;
-
- if (!OPENSSL_init_crypto(OPENSSL_INIT_ASYNC, NULL))
- return ASYNC_ERR;
-
- ctx = async_get_ctx();
- if (ctx == NULL)
- ctx = async_ctx_new();
- if (ctx == NULL)
- return ASYNC_ERR;
-
- if (*job)
- ctx->currjob = *job;
-
- for (;;) {
- if (ctx->currjob != NULL) {
- if (ctx->currjob->status == ASYNC_JOB_STOPPING) {
- *ret = ctx->currjob->ret;
- ctx->currjob->waitctx = NULL;
- async_release_job(ctx->currjob);
- ctx->currjob = NULL;
- *job = NULL;
- return ASYNC_FINISH;
- }
-
- if (ctx->currjob->status == ASYNC_JOB_PAUSING) {
- *job = ctx->currjob;
- ctx->currjob->status = ASYNC_JOB_PAUSED;
- ctx->currjob = NULL;
- return ASYNC_PAUSE;
- }
-
- if (ctx->currjob->status == ASYNC_JOB_PAUSED) {
- ctx->currjob = *job;
- /* Resume previous job */
- if (!async_fibre_swapcontext(&ctx->dispatcher,
- &ctx->currjob->fibrectx, 1)) {
- ASYNCerr(ASYNC_F_ASYNC_START_JOB,
- ASYNC_R_FAILED_TO_SWAP_CONTEXT);
- goto err;
- }
- continue;
- }
-
- /* Should not happen */
- ASYNCerr(ASYNC_F_ASYNC_START_JOB, ERR_R_INTERNAL_ERROR);
- async_release_job(ctx->currjob);
- ctx->currjob = NULL;
- *job = NULL;
- return ASYNC_ERR;
- }
-
- /* Start a new job */
- if ((ctx->currjob = async_get_pool_job()) == NULL)
- return ASYNC_NO_JOBS;
-
- if (args != NULL) {
- ctx->currjob->funcargs = OPENSSL_malloc(size);
- if (ctx->currjob->funcargs == NULL) {
- ASYNCerr(ASYNC_F_ASYNC_START_JOB, ERR_R_MALLOC_FAILURE);
- async_release_job(ctx->currjob);
- ctx->currjob = NULL;
- return ASYNC_ERR;
- }
- memcpy(ctx->currjob->funcargs, args, size);
- } else {
- ctx->currjob->funcargs = NULL;
- }
-
- ctx->currjob->func = func;
- ctx->currjob->waitctx = wctx;
- if (!async_fibre_swapcontext(&ctx->dispatcher,
- &ctx->currjob->fibrectx, 1)) {
- ASYNCerr(ASYNC_F_ASYNC_START_JOB, ASYNC_R_FAILED_TO_SWAP_CONTEXT);
- goto err;
- }
- }
-
-err:
- async_release_job(ctx->currjob);
- ctx->currjob = NULL;
- *job = NULL;
- return ASYNC_ERR;
-}
-
-int ASYNC_pause_job(void)
-{
- ASYNC_JOB *job;
- async_ctx *ctx = async_get_ctx();
-
- if (ctx == NULL
- || ctx->currjob == NULL
- || ctx->blocked) {
- /*
- * Could be we've deliberately not been started within a job so this is
- * counted as success.
- */
- return 1;
- }
-
- job = ctx->currjob;
- job->status = ASYNC_JOB_PAUSING;
-
- if (!async_fibre_swapcontext(&job->fibrectx,
- &ctx->dispatcher, 1)) {
- ASYNCerr(ASYNC_F_ASYNC_PAUSE_JOB, ASYNC_R_FAILED_TO_SWAP_CONTEXT);
- return 0;
- }
- /* Reset counts of added and deleted fds */
- async_wait_ctx_reset_counts(job->waitctx);
-
- return 1;
-}
-
-static void async_empty_pool(async_pool *pool)
-{
- ASYNC_JOB *job;
-
- if (!pool || !pool->jobs)
- return;
-
- do {
- job = sk_ASYNC_JOB_pop(pool->jobs);
- async_job_free(job);
- } while (job);
-}
-
-int async_init(void)
-{
- if (!CRYPTO_THREAD_init_local(&ctxkey, NULL))
- return 0;
-
- if (!CRYPTO_THREAD_init_local(&poolkey, NULL)) {
- CRYPTO_THREAD_cleanup_local(&ctxkey);
- return 0;
- }
-
- return 1;
-}
-
-void async_deinit(void)
-{
- CRYPTO_THREAD_cleanup_local(&ctxkey);
- CRYPTO_THREAD_cleanup_local(&poolkey);
-}
-
-int ASYNC_init_thread(size_t max_size, size_t init_size)
-{
- async_pool *pool;
- size_t curr_size = 0;
-
- if (init_size > max_size) {
- ASYNCerr(ASYNC_F_ASYNC_INIT_THREAD, ASYNC_R_INVALID_POOL_SIZE);
- return 0;
- }
-
- if (!OPENSSL_init_crypto(OPENSSL_INIT_ASYNC, NULL))
- return 0;
-
- if (!ossl_init_thread_start(OPENSSL_INIT_THREAD_ASYNC))
- return 0;
-
- pool = OPENSSL_zalloc(sizeof(*pool));
- if (pool == NULL) {
- ASYNCerr(ASYNC_F_ASYNC_INIT_THREAD, ERR_R_MALLOC_FAILURE);
- return 0;
- }
-
- pool->jobs = sk_ASYNC_JOB_new_reserve(NULL, init_size);
- if (pool->jobs == NULL) {
- ASYNCerr(ASYNC_F_ASYNC_INIT_THREAD, ERR_R_MALLOC_FAILURE);
- OPENSSL_free(pool);
- return 0;
- }
-
- pool->max_size = max_size;
-
- /* Pre-create jobs as required */
- while (init_size--) {
- ASYNC_JOB *job;
- job = async_job_new();
- if (job == NULL || !async_fibre_makecontext(&job->fibrectx)) {
- /*
- * Not actually fatal because we already created the pool, just
- * skip creation of any more jobs
- */
- async_job_free(job);
- break;
- }
- job->funcargs = NULL;
- sk_ASYNC_JOB_push(pool->jobs, job); /* Cannot fail due to reserve */
- curr_size++;
- }
- pool->curr_size = curr_size;
- if (!CRYPTO_THREAD_set_local(&poolkey, pool)) {
- ASYNCerr(ASYNC_F_ASYNC_INIT_THREAD, ASYNC_R_FAILED_TO_SET_POOL);
- goto err;
- }
-
- return 1;
-err:
- async_empty_pool(pool);
- sk_ASYNC_JOB_free(pool->jobs);
- OPENSSL_free(pool);
- return 0;
-}
-
-void async_delete_thread_state(void)
-{
- async_pool *pool = (async_pool *)CRYPTO_THREAD_get_local(&poolkey);
-
- if (pool != NULL) {
- async_empty_pool(pool);
- sk_ASYNC_JOB_free(pool->jobs);
- OPENSSL_free(pool);
- CRYPTO_THREAD_set_local(&poolkey, NULL);
- }
- async_local_cleanup();
- async_ctx_free();
-}
-
-void ASYNC_cleanup_thread(void)
-{
- if (!OPENSSL_init_crypto(OPENSSL_INIT_ASYNC, NULL))
- return;
-
- async_delete_thread_state();
-}
-
-ASYNC_JOB *ASYNC_get_current_job(void)
-{
- async_ctx *ctx;
-
- if (!OPENSSL_init_crypto(OPENSSL_INIT_ASYNC, NULL))
- return NULL;
-
- ctx = async_get_ctx();
- if (ctx == NULL)
- return NULL;
-
- return ctx->currjob;
-}
-
-ASYNC_WAIT_CTX *ASYNC_get_wait_ctx(ASYNC_JOB *job)
-{
- return job->waitctx;
-}
-
-void ASYNC_block_pause(void)
-{
- async_ctx *ctx;
-
- if (!OPENSSL_init_crypto(OPENSSL_INIT_ASYNC, NULL))
- return;
-
- ctx = async_get_ctx();
- if (ctx == NULL || ctx->currjob == NULL) {
- /*
- * We're not in a job anyway so ignore this
- */
- return;
- }
- ctx->blocked++;
-}
-
-void ASYNC_unblock_pause(void)
-{
- async_ctx *ctx;
-
- if (!OPENSSL_init_crypto(OPENSSL_INIT_ASYNC, NULL))
- return;
-
- ctx = async_get_ctx();
- if (ctx == NULL || ctx->currjob == NULL) {
- /*
- * We're not in a job anyway so ignore this
- */
- return;
- }
- if (ctx->blocked > 0)
- ctx->blocked--;
-}
+#include <string.h>
+
+#define ASYNC_JOB_RUNNING 0
+#define ASYNC_JOB_PAUSING 1
+#define ASYNC_JOB_PAUSED 2
+#define ASYNC_JOB_STOPPING 3
+
+static CRYPTO_THREAD_LOCAL ctxkey;
+static CRYPTO_THREAD_LOCAL poolkey;
+
+static async_ctx *async_ctx_new(void)
+{
+ async_ctx *nctx;
+
+ if (!ossl_init_thread_start(OPENSSL_INIT_THREAD_ASYNC))
+ return NULL;
+
+ nctx = OPENSSL_malloc(sizeof(*nctx));
+ if (nctx == NULL) {
+ ASYNCerr(ASYNC_F_ASYNC_CTX_NEW, ERR_R_MALLOC_FAILURE);
+ goto err;
+ }
+
+ async_fibre_init_dispatcher(&nctx->dispatcher);
+ nctx->currjob = NULL;
+ nctx->blocked = 0;
+ if (!CRYPTO_THREAD_set_local(&ctxkey, nctx))
+ goto err;
+
+ return nctx;
+err:
+ OPENSSL_free(nctx);
+
+ return NULL;
+}
+
+async_ctx *async_get_ctx(void)
+{
+ return (async_ctx *)CRYPTO_THREAD_get_local(&ctxkey);
+}
+
+static int async_ctx_free(void)
+{
+ async_ctx *ctx;
+
+ ctx = async_get_ctx();
+
+ if (!CRYPTO_THREAD_set_local(&ctxkey, NULL))
+ return 0;
+
+ OPENSSL_free(ctx);
+
+ return 1;
+}
+
+static ASYNC_JOB *async_job_new(void)
+{
+ ASYNC_JOB *job = NULL;
+
+ job = OPENSSL_zalloc(sizeof(*job));
+ if (job == NULL) {
+ ASYNCerr(ASYNC_F_ASYNC_JOB_NEW, ERR_R_MALLOC_FAILURE);
+ return NULL;
+ }
+
+ job->status = ASYNC_JOB_RUNNING;
+
+ return job;
+}
+
+static void async_job_free(ASYNC_JOB *job)
+{
+ if (job != NULL) {
+ OPENSSL_free(job->funcargs);
+ async_fibre_free(&job->fibrectx);
+ OPENSSL_free(job);
+ }
+}
+
+static ASYNC_JOB *async_get_pool_job(void) {
+ ASYNC_JOB *job;
+ async_pool *pool;
+
+ pool = (async_pool *)CRYPTO_THREAD_get_local(&poolkey);
+ if (pool == NULL) {
+ /*
+ * Pool has not been initialised, so init with the defaults, i.e.
+ * no max size and no pre-created jobs
+ */
+ if (ASYNC_init_thread(0, 0) == 0)
+ return NULL;
+ pool = (async_pool *)CRYPTO_THREAD_get_local(&poolkey);
+ }
+
+ job = sk_ASYNC_JOB_pop(pool->jobs);
+ if (job == NULL) {
+ /* Pool is empty */
+ if ((pool->max_size != 0) && (pool->curr_size >= pool->max_size))
+ return NULL;
+
+ job = async_job_new();
+ if (job != NULL) {
+ if (! async_fibre_makecontext(&job->fibrectx)) {
+ async_job_free(job);
+ return NULL;
+ }
+ pool->curr_size++;
+ }
+ }
+ return job;
+}
+
+static void async_release_job(ASYNC_JOB *job) {
+ async_pool *pool;
+
+ pool = (async_pool *)CRYPTO_THREAD_get_local(&poolkey);
+ OPENSSL_free(job->funcargs);
+ job->funcargs = NULL;
+ sk_ASYNC_JOB_push(pool->jobs, job);
+}
+
+void async_start_func(void)
+{
+ ASYNC_JOB *job;
+ async_ctx *ctx = async_get_ctx();
+
+ while (1) {
+ /* Run the job */
+ job = ctx->currjob;
+ job->ret = job->func(job->funcargs);
+
+ /* Stop the job */
+ job->status = ASYNC_JOB_STOPPING;
+ if (!async_fibre_swapcontext(&job->fibrectx,
+ &ctx->dispatcher, 1)) {
+ /*
+ * Should not happen. Getting here will close the thread...can't do
+ * much about it
+ */
+ ASYNCerr(ASYNC_F_ASYNC_START_FUNC, ASYNC_R_FAILED_TO_SWAP_CONTEXT);
+ }
+ }
+}
+
+int ASYNC_start_job(ASYNC_JOB **job, ASYNC_WAIT_CTX *wctx, int *ret,
+ int (*func)(void *), void *args, size_t size)
+{
+ async_ctx *ctx;
+
+ if (!OPENSSL_init_crypto(OPENSSL_INIT_ASYNC, NULL))
+ return ASYNC_ERR;
+
+ ctx = async_get_ctx();
+ if (ctx == NULL)
+ ctx = async_ctx_new();
+ if (ctx == NULL)
+ return ASYNC_ERR;
+
+ if (*job)
+ ctx->currjob = *job;
+
+ for (;;) {
+ if (ctx->currjob != NULL) {
+ if (ctx->currjob->status == ASYNC_JOB_STOPPING) {
+ *ret = ctx->currjob->ret;
+ ctx->currjob->waitctx = NULL;
+ async_release_job(ctx->currjob);
+ ctx->currjob = NULL;
+ *job = NULL;
+ return ASYNC_FINISH;
+ }
+
+ if (ctx->currjob->status == ASYNC_JOB_PAUSING) {
+ *job = ctx->currjob;
+ ctx->currjob->status = ASYNC_JOB_PAUSED;
+ ctx->currjob = NULL;
+ return ASYNC_PAUSE;
+ }
+
+ if (ctx->currjob->status == ASYNC_JOB_PAUSED) {
+ ctx->currjob = *job;
+ /* Resume previous job */
+ if (!async_fibre_swapcontext(&ctx->dispatcher,
+ &ctx->currjob->fibrectx, 1)) {
+ ASYNCerr(ASYNC_F_ASYNC_START_JOB,
+ ASYNC_R_FAILED_TO_SWAP_CONTEXT);
+ goto err;
+ }
+ continue;
+ }
+
+ /* Should not happen */
+ ASYNCerr(ASYNC_F_ASYNC_START_JOB, ERR_R_INTERNAL_ERROR);
+ async_release_job(ctx->currjob);
+ ctx->currjob = NULL;
+ *job = NULL;
+ return ASYNC_ERR;
+ }
+
+ /* Start a new job */
+ if ((ctx->currjob = async_get_pool_job()) == NULL)
+ return ASYNC_NO_JOBS;
+
+ if (args != NULL) {
+ ctx->currjob->funcargs = OPENSSL_malloc(size);
+ if (ctx->currjob->funcargs == NULL) {
+ ASYNCerr(ASYNC_F_ASYNC_START_JOB, ERR_R_MALLOC_FAILURE);
+ async_release_job(ctx->currjob);
+ ctx->currjob = NULL;
+ return ASYNC_ERR;
+ }
+ memcpy(ctx->currjob->funcargs, args, size);
+ } else {
+ ctx->currjob->funcargs = NULL;
+ }
+
+ ctx->currjob->func = func;
+ ctx->currjob->waitctx = wctx;
+ if (!async_fibre_swapcontext(&ctx->dispatcher,
+ &ctx->currjob->fibrectx, 1)) {
+ ASYNCerr(ASYNC_F_ASYNC_START_JOB, ASYNC_R_FAILED_TO_SWAP_CONTEXT);
+ goto err;
+ }
+ }
+
+err:
+ async_release_job(ctx->currjob);
+ ctx->currjob = NULL;
+ *job = NULL;
+ return ASYNC_ERR;
+}
+
+int ASYNC_pause_job(void)
+{
+ ASYNC_JOB *job;
+ async_ctx *ctx = async_get_ctx();
+
+ if (ctx == NULL
+ || ctx->currjob == NULL
+ || ctx->blocked) {
+ /*
+ * Could be we've deliberately not been started within a job so this is
+ * counted as success.
+ */
+ return 1;
+ }
+
+ job = ctx->currjob;
+ job->status = ASYNC_JOB_PAUSING;
+
+ if (!async_fibre_swapcontext(&job->fibrectx,
+ &ctx->dispatcher, 1)) {
+ ASYNCerr(ASYNC_F_ASYNC_PAUSE_JOB, ASYNC_R_FAILED_TO_SWAP_CONTEXT);
+ return 0;
+ }
+ /* Reset counts of added and deleted fds */
+ async_wait_ctx_reset_counts(job->waitctx);
+
+ return 1;
+}
+
+static void async_empty_pool(async_pool *pool)
+{
+ ASYNC_JOB *job;
+
+ if (!pool || !pool->jobs)
+ return;
+
+ do {
+ job = sk_ASYNC_JOB_pop(pool->jobs);
+ async_job_free(job);
+ } while (job);
+}
+
+int async_init(void)
+{
+ if (!CRYPTO_THREAD_init_local(&ctxkey, NULL))
+ return 0;
+
+ if (!CRYPTO_THREAD_init_local(&poolkey, NULL)) {
+ CRYPTO_THREAD_cleanup_local(&ctxkey);
+ return 0;
+ }
+
+ return 1;
+}
+
+void async_deinit(void)
+{
+ CRYPTO_THREAD_cleanup_local(&ctxkey);
+ CRYPTO_THREAD_cleanup_local(&poolkey);
+}
+
+int ASYNC_init_thread(size_t max_size, size_t init_size)
+{
+ async_pool *pool;
+ size_t curr_size = 0;
+
+ if (init_size > max_size) {
+ ASYNCerr(ASYNC_F_ASYNC_INIT_THREAD, ASYNC_R_INVALID_POOL_SIZE);
+ return 0;
+ }
+
+ if (!OPENSSL_init_crypto(OPENSSL_INIT_ASYNC, NULL))
+ return 0;
+
+ if (!ossl_init_thread_start(OPENSSL_INIT_THREAD_ASYNC))
+ return 0;
+
+ pool = OPENSSL_zalloc(sizeof(*pool));
+ if (pool == NULL) {
+ ASYNCerr(ASYNC_F_ASYNC_INIT_THREAD, ERR_R_MALLOC_FAILURE);
+ return 0;
+ }
+
+ pool->jobs = sk_ASYNC_JOB_new_reserve(NULL, init_size);
+ if (pool->jobs == NULL) {
+ ASYNCerr(ASYNC_F_ASYNC_INIT_THREAD, ERR_R_MALLOC_FAILURE);
+ OPENSSL_free(pool);
+ return 0;
+ }
+
+ pool->max_size = max_size;
+
+ /* Pre-create jobs as required */
+ while (init_size--) {
+ ASYNC_JOB *job;
+ job = async_job_new();
+ if (job == NULL || !async_fibre_makecontext(&job->fibrectx)) {
+ /*
+ * Not actually fatal because we already created the pool, just
+ * skip creation of any more jobs
+ */
+ async_job_free(job);
+ break;
+ }
+ job->funcargs = NULL;
+ sk_ASYNC_JOB_push(pool->jobs, job); /* Cannot fail due to reserve */
+ curr_size++;
+ }
+ pool->curr_size = curr_size;
+ if (!CRYPTO_THREAD_set_local(&poolkey, pool)) {
+ ASYNCerr(ASYNC_F_ASYNC_INIT_THREAD, ASYNC_R_FAILED_TO_SET_POOL);
+ goto err;
+ }
+
+ return 1;
+err:
+ async_empty_pool(pool);
+ sk_ASYNC_JOB_free(pool->jobs);
+ OPENSSL_free(pool);
+ return 0;
+}
+
+void async_delete_thread_state(void)
+{
+ async_pool *pool = (async_pool *)CRYPTO_THREAD_get_local(&poolkey);
+
+ if (pool != NULL) {
+ async_empty_pool(pool);
+ sk_ASYNC_JOB_free(pool->jobs);
+ OPENSSL_free(pool);
+ CRYPTO_THREAD_set_local(&poolkey, NULL);
+ }
+ async_local_cleanup();
+ async_ctx_free();
+}
+
+void ASYNC_cleanup_thread(void)
+{
+ if (!OPENSSL_init_crypto(OPENSSL_INIT_ASYNC, NULL))
+ return;
+
+ async_delete_thread_state();
+}
+
+ASYNC_JOB *ASYNC_get_current_job(void)
+{
+ async_ctx *ctx;
+
+ if (!OPENSSL_init_crypto(OPENSSL_INIT_ASYNC, NULL))
+ return NULL;
+
+ ctx = async_get_ctx();
+ if (ctx == NULL)
+ return NULL;
+
+ return ctx->currjob;
+}
+
+ASYNC_WAIT_CTX *ASYNC_get_wait_ctx(ASYNC_JOB *job)
+{
+ return job->waitctx;
+}
+
+void ASYNC_block_pause(void)
+{
+ async_ctx *ctx;
+
+ if (!OPENSSL_init_crypto(OPENSSL_INIT_ASYNC, NULL))
+ return;
+
+ ctx = async_get_ctx();
+ if (ctx == NULL || ctx->currjob == NULL) {
+ /*
+ * We're not in a job anyway so ignore this
+ */
+ return;
+ }
+ ctx->blocked++;
+}
+
+void ASYNC_unblock_pause(void)
+{
+ async_ctx *ctx;
+
+ if (!OPENSSL_init_crypto(OPENSSL_INIT_ASYNC, NULL))
+ return;
+
+ ctx = async_get_ctx();
+ if (ctx == NULL || ctx->currjob == NULL) {
+ /*
+ * We're not in a job anyway so ignore this
+ */
+ return;
+ }
+ if (ctx->blocked > 0)
+ ctx->blocked--;
+}