31   if (gcov_var_.file) return false;  in Open()
33   memset(&gcov_var_, 0, sizeof(gcov_var_));  in Open()
34   gcov_var_.overread = -1u;  in Open()
36   gcov_var_.file = fopen(filename_.c_str(), "rb");  in Open()
37   if (!gcov_var_.file) return false;  in Open()
38   gcov_var_.mode = 0;  in Open()
39   setbuf(gcov_var_.file, (char*)0);  in Open()
44   if (gcov_var_.file) {  in Close()
45     fclose(gcov_var_.file);  in Close()
46     gcov_var_.file = 0;  in Close()
47     gcov_var_.length = 0;  in Close()
49   free(gcov_var_.buffer);  in Close()
50   gcov_var_.alloc = 0;  in Close()
51   gcov_var_.buffer = 0;  in Close()
52   gcov_var_.mode = 0;  in Close()
53   return gcov_var_.error;  in Close()
57   if (!gcov_var_.file) return;  in Sync()
60   if (base - gcov_var_.start <= gcov_var_.length) {  in Sync()
61     gcov_var_.offset = base - gcov_var_.start;  in Sync()
63     gcov_var_.offset = gcov_var_.length = 0;  in Sync()
64     fseek(gcov_var_.file, base << 2, SEEK_SET);  in Sync()
65     gcov_var_.start = ftell(gcov_var_.file) >> 2;  in Sync()
92   size_t new_size = gcov_var_.alloc;  in Allocate()
97   gcov_var_.alloc = new_size;  in Allocate()
98   gcov_var_.buffer = (unsigned*)realloc(gcov_var_.buffer, new_size << 2);  in Allocate()
103   unsigned excess = gcov_var_.length - gcov_var_.offset;  in ReadWords()
105   if (!gcov_var_.file) return 0;  in ReadWords()
108     gcov_var_.start += gcov_var_.offset;  in ReadWords()
109     memmove(gcov_var_.buffer, gcov_var_.buffer + gcov_var_.offset, excess * 4);  in ReadWords()
110     gcov_var_.offset = 0;  in ReadWords()
111     gcov_var_.length = excess;  in ReadWords()
112     if (gcov_var_.length + words > gcov_var_.alloc) {  in ReadWords()
113       Allocate(gcov_var_.length + words);  in ReadWords()
115     excess = gcov_var_.alloc - gcov_var_.length;  in ReadWords()
116     excess = fread(gcov_var_.buffer + gcov_var_.length, 1, excess << 2,  in ReadWords()
117                    gcov_var_.file) >> 2;  in ReadWords()
118     gcov_var_.length += excess;  in ReadWords()
119     if (gcov_var_.length < words) {  in ReadWords()
120       gcov_var_.overread += words - gcov_var_.length;  in ReadWords()
121       gcov_var_.length = 0;  in ReadWords()
125   result = &gcov_var_.buffer[gcov_var_.offset];  in ReadWords()
126   gcov_var_.offset += words;  in ReadWords()
135     gcov_var_.endian = 1;  in Magic()
149     gcov_var_.error = -1;  in ReadCounter()
155   int num_words = fwrite(gcov_var_.buffer, size << 2, 1, gcov_var_.file);  in WriteBlock()
157     gcov_var_.error = 1;  in WriteBlock()
159   gcov_var_.start += size;  in WriteBlock()
160   gcov_var_.offset -= size;  in WriteBlock()