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Direktori : /opt/cloudlinux/alt-php70/root/usr/include/php/ext/swoole/include/ |
Current File : //opt/cloudlinux/alt-php70/root/usr/include/php/ext/swoole/include/context.h |
#pragma once #ifdef SW_NO_USE_ASM_CONTEXT #ifdef HAVE_BOOST_CONTEXT #define USE_BOOST_CONTEXT 1 #include <boost/context/all.hpp> #else #define USE_UCONTEXT 1 #include <ucontext.h> #endif #else #include "asm_context.h" #endif #if defined(HAVE_VALGRIND) && !defined(HAVE_KQUEUE) #define USE_VALGRIND 1 #endif #include "swoole.h" #include "error.h" #if __linux__ #include <sys/mman.h> #endif typedef void (*coroutine_func_t)(void*); namespace swoole { //namespace start static uint32_t& get_protect_stack_page() { static uint32_t protect_stack_page = 0; return protect_stack_page; } static bool protect_stack(void *top, size_t stack_size, uint32_t page) { if (stack_size <= SwooleG.pagesize * (page + 1)) { swoole_error_log(SW_LOG_ERROR, SW_ERROR_CO_PROTECT_STACK_FAILED, "getpagesize() failed"); return false; } #ifdef PROT_NONE void *protect_page_addr = ((size_t) top & 0xfff) ? (void*) (((size_t) top & ~(size_t) 0xfff) + 0x1000) : top; if (-1 == mprotect(protect_page_addr, SwooleG.pagesize * page, PROT_NONE)) { swSysWarn( "mprotect() failed: origin_addr:%p, align_addr:%p, page_size:%d, protect_page:%u", top, protect_page_addr, SwooleG.pagesize, page ); return false; } else { swDebug("origin_addr:%p, align_addr:%p, page_size:%d, protect_page:%u", top, protect_page_addr, page, SwooleG.pagesize); return true; } #endif } static bool unprotect_stack(void *top, uint32_t page) { void *protect_page_addr = ((size_t) top & 0xfff) ? (void*) (((size_t) top & ~(size_t) 0xfff) + 0x1000) : top; #ifdef PROT_READ if (-1 == mprotect(protect_page_addr, SwooleG.pagesize * page, PROT_READ | PROT_WRITE)) { swSysWarn( "mprotect() failed: origin_addr:%p, align_addr:%p, page_size:%d, protect_page:%u", top, protect_page_addr, SwooleG.pagesize, page ); return false; } else { swDebug("origin_addr:%p, align_addr:%p, page_size:%d, protect_page:%u", top, protect_page_addr, page, SwooleG.pagesize); return true; } #endif } class Context { public: Context(size_t stack_size, coroutine_func_t fn, void* private_data); ~Context(); bool SwapIn(); bool SwapOut(); static void context_func(void* arg); #if !defined(SW_NO_USE_ASM_CONTEXT) && defined(SW_LOG_TRACE_OPEN) ssize_t get_stack_usage(); #endif public: bool end; private: #ifdef USE_BOOST_CONTEXT boost::context::fcontext_t ctx_; boost::context::fcontext_t swap_ctx_; #elif USE_UCONTEXT ucontext_t swap_ctx_; ucontext_t ctx_; #else fcontext_t ctx_; fcontext_t swap_ctx_; #endif coroutine_func_t fn_; char* stack_; uint32_t stack_size_; uint32_t protect_page_; #ifdef USE_VALGRIND uint32_t valgrind_stack_id; #endif void *private_data_; }; //namespace end }