初步实现异常捕获机制

soft/exception.h

@@ -0,0 +1,104 @@
+
+
+#ifndef exception_h__
+#define exception_h__
+
+#include "setjmp.h"
+#include "mystdlib.h"
+
+#define THROW_LOG__MAX_SIZE 1024
+
+
+typedef struct _jmp_fram{
+  struct _jmp_fram *next;
+  struct _jmp_fram *last;
+  map_def *mem;
+  jmp_buf fram;
+}jmp_fram;
+
+
+typedef struct{
+  size_t jmp_num;
+  jmp_fram *jmp_head;
+  int ret;
+  char *file;
+  int line;
+  char log[THROW_LOG__MAX_SIZE];
+}exception_def;
+
+
+
+#define jmp_next(j) {\
+  if((*j)){\
+    (*j)->next=calloc(sizeof(jmp_fram),1);\
+    (*j)->next->last=(*j);\
+    (*j)=(*j)->next;\
+  }else{\
+    (*j)=calloc(sizeof(jmp_fram),1);\
+  }\
+}
+
+#define jmp_last(j) {\
+  if((*j)){\
+    jmp_fram *l=(*j)->last;\
+    if(l){\
+      __mem_mov(&(l)->mem,&(*j)->mem);\
+    }\
+    free(*j);\
+    (*j)=l;\
+    if(*j){\
+      (*j)->next=0;\
+    }\
+  }\
+}
+
+
+#define jmp_clear(j) {\
+  if((*j)){\
+    jmp_fram *l=(*j)->last;\
+    __mem_clear(&(*j)->mem);\
+    free(*j);\
+    (*j)=l;\
+    if(*j){\
+      (*j)->next=0;\
+    }\
+  }\
+}
+
+
+#define __try(){\
+  exception_def *f=exception();\
+  jmp_fram **h=&f->jmp_head;\
+  int ret;\
+  jmp_next(h);\
+    ret= setjmp(((*h)->fram));\
+  if(ret){\
+    jmp_clear(h);\
+  }\
+  f->ret=ret;\
+}
+
+#define try_ __try();if(exception()->ret==0){
+#define catch_ {\
+  exception_def *f=exception();\
+  jmp_fram **h=&f->jmp_head;\
+  jmp_last(h);\
+}}else
+
+#define throw_(fmt,...) __throw(__FILE__,__LINE__,fmt,##__VA_ARGS__)
+
+exception_def *exception();
+void __throw(char *file,int line,const char *fmt,...);
+
+
+
+
+int test_add(int a,int b);
+
+
+
+
+
+
+#endif
+