KolibriOS/kolibrios
13
14
Fork 12
Code Issues 113 Pull Requests 16 Actions Projects 1 Releases Wiki Activity

collection.h: dynamic memory allocation

Browse Source 
git-svn-id: svn://kolibrios.org@5965 a494cfbc-eb01-0410-851d-a64ba20cac60
This commit is contained in:
Kiril Lipatov
2015-12-15 16:18:38 +00:00
parent 478ddf2f66
commit 63cc280c5f
3 changed files with 37 additions and 28 deletions
Download Patch File Download Diff File Expand all files Collapse all files

52
programs/cmm/lib/collection.h
View File

@@ -4,42 +4,52 @@
struct collection
{
int count;
dword element_offset[4096];
int realloc_size, count;
dword data_start;
dword data_cur_pos;
dword data_size;
dword string_data_start;
dword string_data_cur_pos;
void add();
dword element_offset[4090];
int add();
dword get();
void drop();
void init();
void increase_data_size();
};
void collection::init(dword size) {
if (data_size) drop();
data_size = data_size + size;
string_data_cur_pos = string_data_start = malloc(data_size);
count = 0;
void collection::increase_data_size() {
int filled_size;
if (realloc_size<4096) realloc_size = 4096;
if (!data_size) {
data_size = realloc_size;
data_start = malloc(realloc_size);
}
else {
data_size = data_size + realloc_size;
data_start = realloc(data_start, data_size);
}
}
void collection::add(dword in) {
strcpy(string_data_cur_pos, in);
element_offset[count] = string_data_cur_pos;
string_data_cur_pos += strlen(in) + 1;
int collection::add(dword in) {
if (count >= 4090) return 0;
if (data_cur_pos+strlen(in)+2 > data_size) {
increase_data_size();
add(in);
return;
}
strcpy(data_start+data_cur_pos, in);
element_offset[count] = data_cur_pos;
data_cur_pos += strlen(in) + 1;
count++;
return 1;
}
dword collection::get(dword pos) {
return element_offset[pos];
return data_start + element_offset[pos];
}
void collection::drop() {
if (string_data_start) free(string_data_start);
data_size =
string_data_start =
string_data_cur_pos =
count = 0;
if (data_start) free(data_start);
data_size = data_start = data_cur_pos = count = 0;
}
#endif