prenex/turbolist
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

minor optimizations

Browse Source
This commit is contained in:
masterexplorer 2024-08-27 11:08:58 +02:00
parent 2b12b5c970
commit 0fbc29e482
2 changed files with 35 additions and 19 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

36
TurboList.hpp
View File

@ -5,6 +5,17 @@
#include<cstdlib> #include<cstdlib>
#include<cassert> #include<cassert>
#ifndef TL_NOINLINE
#define TL_NOINLINE __attribute__((noinline))
#endif /* TL_NOINLINE */
#ifndef TL_LIKELY
#define TL_LIKELY(x) __builtin_expect(!!(x), 1)
#endif /* TL_LIKELY */
#ifndef TL_UNLIKELY
#define TL_UNLIKELY(x) __builtin_expect(!!(x), 0)
#endif /* TL_UNLIKELY */
class TurboList { class TurboList {
int *old; int *old;
int *nex; int *nex;
@ -14,6 +25,19 @@ class TurboList {
uint32_t capacity; uint32_t capacity;
uint32_t count; uint32_t count;
TL_NOINLINE void grow_and_insert(int elem) noexcept {
// assert(mid == 0);
if(old) free(old);
old = nex;
mid = end;
capacity *= 2;
nex = (int *) malloc(this->capacity * sizeof(int));
// Will go into the INSERT code path here
insert(elem);
}
public: public:
inline TurboList(uint32_t initial_cap = 16) noexcept : inline TurboList(uint32_t initial_cap = 16) noexcept :
old(nullptr), old(nullptr),
@ -35,7 +59,7 @@ public:
} }
inline void insert(int elem) noexcept { inline void insert(int elem) noexcept {
if(count < capacity) { if(TL_LIKELY(count < capacity)) {
// INSERT // INSERT
if(mid > 0) { if(mid > 0) {
nex[mid - 1] = old[mid - 1]; nex[mid - 1] = old[mid - 1];
@ -45,15 +69,7 @@ public:
++count; ++count;
} else { } else {
// GROW // GROW
assert(mid == 0); grow_and_insert(elem);
if(old) free(old);
old = nex;
mid = end;
capacity *= 2;
nex = (int *) malloc(this->capacity * sizeof(int));
// Will go into the INSERT code path here
insert(elem);
} }
} }

18
main.cpp
View File

@ -23,7 +23,15 @@ static inline void printt(const char *prefix, size_t before, size_t after) noexc
} }
int main() { int main() {
TurboList list(4); std::vector<int> vec;
auto before_vector = ms_now();
for(int i = 0; i < N; ++i) {
vec.push_back(i);
}
auto after_vector = ms_now();
printt("vector", before_vector, after_vector);
TurboList list;
auto before_TurboList = ms_now(); auto before_TurboList = ms_now();
for(int i = 0; i < N; ++i) { for(int i = 0; i < N; ++i) {
@ -38,13 +46,5 @@ int main() {
} }
#endif /* PRINT_DBG */ #endif /* PRINT_DBG */
std::vector<int> vec;
auto before_vector = ms_now();
for(int i = 0; i < N; ++i) {
vec.push_back(i);
}
auto after_vector = ms_now();
printt("vector", before_vector, after_vector);
return 0; return 0;
} }