mirror of
https://github.com/matrix-construct/construct
synced 2024-07-21 09:58:46 +02:00
149 lines
4.5 KiB
C++
149 lines
4.5 KiB
C++
/*
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* Copyright (C) 2016 Charybdis Development Team
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* Copyright (C) 2016 Jason Volk <jason@zemos.net>
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice is present in all copies.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#pragma once
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#define HAVE_IRCD_JS_RUNTIME_H
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namespace ircd {
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namespace js {
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class runtime
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:custom_ptr<JSRuntime>
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{
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static void handle_error(JSContext *, const char *msg, JSErrorReport *) noexcept;
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static void handle_out_of_memory(JSContext *, void *) noexcept;
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static void handle_large_allocation_failure(void *) noexcept;
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static void handle_gc(JSRuntime *, JSGCStatus, void *) noexcept;
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static void handle_finalize(JSFreeOp *, JSFinalizeStatus, bool is_compartment, void *) noexcept;
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static void handle_compartment_name(JSRuntime *, JSCompartment *, char *buf, size_t) noexcept;
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static void handle_compartment_destroy(JSFreeOp *, JSCompartment *) noexcept;
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static bool handle_context(JSContext *, uint op, void *) noexcept;
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static bool handle_interrupt(JSContext *) noexcept;
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public:
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struct opts
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{
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size_t maxbytes = 64_MiB;
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size_t code_stack_max = 0;
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size_t trusted_stack_max = 0;
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size_t untrusted_stack_max = 0;
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};
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struct opts opts; // We keep a copy of the given opts here
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operator JSRuntime *() const { return get(); }
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operator JSRuntime &() const { return custom_ptr<JSRuntime>::operator*(); }
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bool operator!() const { return !custom_ptr<JSRuntime>::operator bool(); }
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auto ptr() const { return get(); }
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auto ptr() { return get(); }
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runtime(const struct opts &);
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runtime() = default;
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runtime(runtime &&) noexcept;
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runtime(const runtime &) = delete;
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runtime &operator=(runtime &&) noexcept;
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runtime &operator=(const runtime &) = delete;
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~runtime() noexcept;
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friend void interrupt(runtime &);
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};
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// Current thread_local runtime. Runtimes/Contexts are single-threaded and we maintain
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// one per thread (or only one will be relevant on the given thread you are on).
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// Do not construct more than one runtime on the same thread- this is overwritten.
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extern __thread runtime *rt;
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// Get to our `struct runtime` from any upstream JSRuntime
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const runtime &our(const JSRuntime *const &);
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runtime &our(JSRuntime *const &);
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// Get to our runtime from any JSObject
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const runtime &our_runtime(const JSObject &);
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runtime &our_runtime(JSObject &);
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// Get to our runtime from any JSFreeOp
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JSFreeOp *default_freeop(runtime &);
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const runtime &our_runtime(const JSFreeOp &);
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runtime &our_runtime(JSFreeOp &);
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// Do not call interrupt() unless you know what you're doing; see context.h.
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void interrupt(runtime &r);
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void run_gc(runtime &r);
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inline void
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run_gc(runtime &r)
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{
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JS_GC(r);
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}
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inline void
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interrupt(runtime &r)
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{
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JS_RequestInterruptCallback(r);
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}
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inline runtime &
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our_runtime(JSFreeOp &o)
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{
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return our(o.runtime());
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}
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inline const runtime &
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our_runtime(const JSFreeOp &o)
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{
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return our(o.runtime());
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}
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inline JSFreeOp *
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default_freeop(runtime &r)
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{
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return JS_GetDefaultFreeOp(r);
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}
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inline runtime &
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our_runtime(JSObject &o)
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{
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return our(JS_GetObjectRuntime(&o));
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}
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inline const runtime &
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our_runtime(const JSObject &o)
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{
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return our(JS_GetObjectRuntime(const_cast<JSObject *>(&o)));
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}
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inline runtime &
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our(JSRuntime *const &c)
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{
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return *static_cast<runtime *>(JS_GetRuntimePrivate(c));
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}
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inline const runtime &
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our(const JSRuntime *const &c)
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{
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return *static_cast<const runtime *>(JS_GetRuntimePrivate(const_cast<JSRuntime *>(c)));
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}
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} // namespace js
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} // namespace ircd
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