it allocates memory
This commit is contained in:
commit
e8a8377330
2
.gitignore
vendored
Normal file
2
.gitignore
vendored
Normal file
|
@ -0,0 +1,2 @@
|
|||
*.exe
|
||||
**/.DS_Store
|
25
README.md
Normal file
25
README.md
Normal file
|
@ -0,0 +1,25 @@
|
|||
# memory allocator
|
||||
|
||||
it allocates memory *(in gibibytes (GiB))*
|
||||
|
||||
## how to use
|
||||
|
||||
- run the executable
|
||||
- enter how many gibibytes you want (max is how many gibibytes of memory you have)
|
||||
- confirm (y)
|
||||
- wait for the program to allocate the memory
|
||||
- your memory is allocated
|
||||
- press any key or CTRL+C to free the memory and exit the program
|
||||
- ???
|
||||
- profit
|
||||
|
||||
## how to compile
|
||||
|
||||
- get a c compiler (i use gcc)
|
||||
- `gcc -o ./allocatememory.exe ./main.c`
|
||||
- ???
|
||||
- profit
|
||||
|
||||
## why
|
||||
|
||||
i was bored
|
47
main.c
Normal file
47
main.c
Normal file
|
@ -0,0 +1,47 @@
|
|||
#include <stdio.h>
|
||||
#include <stdlib.h>
|
||||
|
||||
int main() {
|
||||
|
||||
long long unsigned int size = 0;
|
||||
|
||||
printf("please enter the number of sizes (GiB) you would like to allocate (i.e. 4 = 4GiB):\n> ");
|
||||
int digit = 0;
|
||||
while (1) {
|
||||
char input = getchar();
|
||||
if (input == '\n') break;
|
||||
if (input < '0' || input > '9') continue;
|
||||
|
||||
char number = input - 48;
|
||||
if (digit > 0) number = number * 10 * digit;
|
||||
if (input == '0') number = 10 * digit;
|
||||
|
||||
size = size + number;
|
||||
digit++;
|
||||
}
|
||||
|
||||
size = size * 1024 * 1024 * 1024;
|
||||
|
||||
printf("you are about to allocate %llu bytes of heap memory. are you sure? (y/n)\n> ", size);
|
||||
|
||||
char input = getchar();
|
||||
if (input != 'y') return 0;
|
||||
while (getchar() != '\n');
|
||||
|
||||
printf("please wait...\n");
|
||||
char* wtf = (char*) malloc(size * sizeof(char));
|
||||
|
||||
for (int i = 0; i < size; i++) {
|
||||
wtf[i] = 255;
|
||||
}
|
||||
|
||||
printf("%d bytes of heap memory has been allocated. you are insane.\n", size);
|
||||
printf("press any key to release this memory, or CTRL+C to exit the program.\n");
|
||||
|
||||
getchar();
|
||||
|
||||
free(wtf);
|
||||
|
||||
return 0;
|
||||
|
||||
}
|
Loading…
Reference in a new issue