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00013 #ifndef __WVTASK_H
00014 #define __WVTASK_H
00015
00016 #ifdef _WIN32
00017
00018 #include "wvwin32task.h"
00019
00020 #else
00021
00022 #include "wvstring.h"
00023 #include "wvlinklist.h"
00024 #include "setjmp.h"
00025
00026 #define WVTASK_MAGIC 0x123678
00027
00028 class WvTaskMan;
00029
00030
00031 class WvTask
00032 {
00033 friend class WvTaskMan;
00034
00035
00036
00037
00038
00039
00040
00041
00042 typedef void TaskFunc(void *userdata);
00043
00044 static int taskcount, numtasks, numrunning;
00045 int magic_number, *stack_magic;
00046 WvString name;
00047 int tid;
00048
00049 size_t stacksize;
00050 bool running, recycled;
00051
00052 WvTaskMan &man;
00053 jmp_buf mystate;
00054
00055 TaskFunc *func;
00056 void *userdata;
00057
00058 WvTask(WvTaskMan &_man, size_t _stacksize = 64*1024);
00059
00060 public:
00061 virtual ~WvTask();
00062
00063 void start(WvStringParm _name, TaskFunc *_func, void *_userdata);
00064 bool isrunning() const
00065 { return running; }
00066 void recycle();
00067 };
00068
00069
00070 DeclareWvList(WvTask);
00071
00072
00073 class WvTaskMan
00074 {
00075 friend class WvTask;
00076
00077 static WvTaskMan *singleton;
00078 static int links;
00079
00080 static int magic_number;
00081 static WvTaskList free_tasks;
00082
00083 static void get_stack(WvTask &task, size_t size);
00084 static void stackmaster();
00085 static void _stackmaster();
00086 static void do_task();
00087
00088 static char *stacktop;
00089 static jmp_buf stackmaster_task;
00090
00091 static WvTask *stack_target;
00092 static jmp_buf get_stack_return;
00093
00094 static WvTask *current_task;
00095 static jmp_buf toplevel;
00096
00097 WvTaskMan();
00098 virtual ~WvTaskMan();
00099
00100 public:
00101
00102 static WvTaskMan *get();
00103 static void unlink();
00104
00105 WvTask *start(WvStringParm name,
00106 WvTask::TaskFunc *func, void *userdata,
00107 size_t stacksize = 64*1024);
00108
00109
00110
00111 static int run(WvTask &task, int val = 1);
00112 static int yield(int val = 1);
00113
00114 static WvTask *whoami()
00115 { return current_task; }
00116 };
00117
00118
00119 #endif // ifdef _WIN32
00120 #endif // __WVTASK_H