malloc

Use bonus compilation to enable all features

ft_malloc

mandatory

make

for mac

DYLD_INSERT_LIBRARIES=./libft_malloc.so DYLD_FORCE_FLAT_NAMESPACE=1 ./a.out

! does not work with multi-threaded programs

  make fclean
  make bonus

types

Name	Details
MallocShowHeap	show detailed heap log and freelists at the end of the execution
MallocShowAbbr	show abbriviated heap log and freelists at the end of the execution
MallocShowFree	show freelists at the end of the execution
MallocDebug	log each call to each `malloc` `free` `realloc` `calloc` function
MallocHelp	show availiable environment variables and quick explanations

usage

b. without exporting (for Linux)

MallocShowHeap=1 LD_PRELOAD=./libft_malloc.so LD_LIBRARY_PATH=. ./a.out

apply enviroment varialbes to a test without using export

run

MallocHelp=1 LD_PRELOAD=./libft_malloc.so LD_LIBRARY_PATH=. ./single_test

Test no.	Name	Details
0	basic test	`Nmallocs -> Nfrees` : malloc multiple size in all size regions, and free them all at the end. Check most basic allocations.
1	basic test1	`malloc -> free -> malloc` : malloc the exact same size region just after the free of the same size chunk.
2	basic test2	`malloc -> wirte -> read` : malloc ereas and write and read from them to varify if it works.
3	tiny test	`Nmalloc` : malloc as much as possible with tiny allocation size.
4	small test	`Nmalloc` : malloc as much as possible with small allocation size.
5	large test	`Nmalloc` : malloc as much as possible with large allocation size.
6	basic realloc test	`malloc -> realloc` : realloc malloced ptr with different sizes and check there contents.
7	freelists test	`mallocx2 -> free` : malloc twice each time and free the first one to allow them to be stored in a freelist.

./test/benchmark.sh

Google Test uses malloc, so replacing original malloc will cause problems to run the test
Therefore, the test loads malloc as ft_malloc using dlopen
To enable google testing, malloc and realloc function does not call malloc internally. It instead calls malloc_ function to avoid calling real malloc during testing.
run (build)
```
make gtest
```
for bonus compilation
- This will execute all tests in one process, allowing the tests of extended memory regions.
```
make test
```