1 /*- 2 * Copyright (c) 2023-2025 Ruslan Bukin <br@bsdpad.com> 3 * 4 * This work was supported by Innovate UK project 105694, "Digital Security 5 * by Design (DSbD) Technology Platform Prototype". 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29 #ifndef _DEV_HWT_HWT_THREAD_H_ 30 #define _DEV_HWT_HWT_THREAD_H_ 31 32 struct hwt_record_entry; 33 34 struct hwt_thread { 35 struct hwt_vm *vm; 36 struct hwt_context *ctx; 37 struct hwt_backend *backend; 38 struct thread *td; 39 TAILQ_ENTRY(hwt_thread) next; 40 int thread_id; 41 int state; 42 #define HWT_THREAD_STATE_EXITED (1 << 0) 43 struct mtx mtx; 44 u_int refcnt; 45 int cpu_id; /* last cpu_id */ 46 void *private; /* backend-specific private data */ 47 }; 48 49 /* Thread allocation. */ 50 int hwt_thread_alloc(struct hwt_thread **thr0, char *path, size_t bufsize, 51 int kva_req); 52 void hwt_thread_free(struct hwt_thread *thr); 53 54 /* Thread list mgt. */ 55 void hwt_thread_insert(struct hwt_context *ctx, struct hwt_thread *thr, struct hwt_record_entry *entry); 56 struct hwt_thread * hwt_thread_first(struct hwt_context *ctx); 57 struct hwt_thread * hwt_thread_lookup(struct hwt_context *ctx, 58 struct thread *td); 59 60 #define HWT_THR_LOCK(thr) mtx_lock(&(thr)->mtx) 61 #define HWT_THR_UNLOCK(thr) mtx_unlock(&(thr)->mtx) 62 #define HWT_THR_ASSERT_LOCKED(thr) mtx_assert(&(thr)->mtx, MA_OWNED) 63 64 #endif /* !_DEV_HWT_HWT_THREAD_H_ */ 65