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v/vlib/builtin
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Petr Makhnev a39c26507c
builtin: speed up string concatenation and repeat() method with vmemcpy instead of for loop for copying data (#18206) 
These changes almost do not speed up the program with the `-prod` flag,
since modern С compilers can do such optimization on their own, but in
normal mode, the performance gain is from 1.6 (concatenation) to 1.8 (repeat) times.

Concatenation:
Old (`for` loop):
Time (mean):          3.699 s +- 0.071 s  [User: 3.629 s, System: 0.069 s]
Range (min ... max):  3.548 s ... 3.741 s  10 runs

New (vmemcpy):
Time (mean):          2.305 s +- 0.065 s  [User: 2.263 s, System: 0.041 s]
Range (min ... max):  2.172 s ... 2.355 s  10 runs

`vmemcpy version` ran 1.60 +- 0.05 times faster than 'for loop version'
2023-05-19 16:18:23 +03:00
..
js
fmt: remove redundant parenthesis in the complex infix expr (#17873)
2023-04-04 13:47:48 +03:00
linux_bare
builtin: fix wrong module name imported in vlib/builtin/linux_bare/old/.checks/linuxsys/linuxsys.v (#17102)
2023-01-24 22:19:30 +02:00
wasm
wasm: bug fixes and memory based changes (#17497)
2023-03-04 11:24:33 +02:00
wasm_bare
all: wrap up unsafe { nil } (p. 3)
2022-07-21 21:01:30 +03:00
array_d_gcboehm_opt.v
builtin, cgen: fix array of struct with map field initialize (fix #17325) (#17340)
2023-02-18 20:34:15 +02:00
array_flags_test.v
builtin: add .nogrow and .nofree flags to array (#16661)
2022-12-14 09:44:14 +02:00
array_notd_gcboehm_opt.v
builtin, cgen: fix array of struct with map field initialize (fix #17325) (#17340)
2023-02-18 20:34:15 +02:00
array_test.v
ci: workaround flakyness of array_test.v on windows, with the default GC mode
2023-04-09 09:48:15 +03:00
array.c.v
builtin: move C. calls to .c.v files (#11164)
2021-08-12 21:46:38 +03:00
array.v
all: 2023 copyright
2023-03-28 22:55:57 +02:00
builtin_android_outside_termux.c.v
android: provide more predictable logging, add comptime termux support (#14984)
2022-07-07 18:28:29 +03:00
builtin_backtraces_d_musl.c.v
builtin: improve musl/Alpine support (define weak backtrace/backtrace_symbols/backtrace_symbols_fd symbols) (#14250)
2022-05-03 09:17:53 +03:00
builtin_backtraces_nix.c.v
builtin: improve musl/Alpine support (define weak backtrace/backtrace_symbols/backtrace_symbols_fd symbols) (#14250)
2022-05-03 09:17:53 +03:00
builtin_d_gcboehm.c.v
builtin: heap memory usage api (#18103)
2023-05-03 20:33:52 +03:00
builtin_d_use_libbacktrace.c.v
backtrace: use unsafe { nil }
2023-04-14 08:28:22 +02:00
builtin_ios.c.v
v: deprecate @VROOT in favour of @VMODROOT (#9795)
2021-04-19 19:01:47 +03:00
builtin_nix.c.v
all: 2023 copyright
2023-03-28 22:55:57 +02:00
builtin_notd_gcboehm.c.v
builtin: heap memory usage api (#18103)
2023-05-03 20:33:52 +03:00
builtin_notd_use_libbacktrace.c.v
builtin: print libbacktrace output to stderr, on panics/segfault crash (#14434)
2022-05-17 14:56:34 +03:00
builtin_test.v
builtin: add libbacktrace as option for generating stack traces (#14277)
2022-05-04 21:17:05 +03:00
builtin_windows.c.v
all: 2023 copyright
2023-03-28 22:55:57 +02:00
builtin.c.v
builtin: heap memory usage api (#18103)
2023-05-03 20:33:52 +03:00
builtin.v
all: attr for enum fields (+ json encode/decode) (#18163)
2023-05-13 01:08:30 +02:00
byte_test.v
all: byte => u8
2022-04-15 14:58:56 +03:00
cfns_wrapper.c.v
builtin: support -d trace_vmemset, -d trace_vmemcmp, -d trace_vmemmove and -d trace_vmemcpy too
2022-12-22 20:08:53 +02:00
cfns.c.v
builtin: add C.scanf fn decl to cfns.c.v (#17965)
2023-04-16 08:00:19 +03:00
chan.v
checker: make use of private enum from outside module an error. (#9821)
2021-04-22 07:07:56 +03:00
float_test.v
vfmt: change all '$expr' to '${expr}' (#16428)
2022-11-15 16:53:13 +03:00
float_x64.v
all: 2023 copyright
2023-03-28 22:55:57 +02:00
float.c.v
all: 2023 copyright
2023-03-28 22:55:57 +02:00
gated_array_string_test.v
all: support slices with negative indexes #[start..end] (gated arrays) (#12914)
2021-12-22 16:34:02 +03:00
int_test.v
builtin,tests: fix int_test.v on macos, m1
2022-08-17 17:18:10 +03:00
int.v
all: 2023 copyright
2023-03-28 22:55:57 +02:00
isnil_test.v
all: wrap up unsafe { nil } (p. 3)
2022-07-21 21:01:30 +03:00
map_d_gcboehm_opt.v
cgen: minimise sizeof(EmptyStruct) to 0 for gcc/clang and to 1 for tcc/msvc, by changing EMPTY_STRUCT_DECLARATION and EMPTY_STRUCT_INITIALIZATION (#16733)
2022-12-22 21:47:39 +02:00
map_of_floats_test.v
vfmt: change all '$expr' to '${expr}' (#16428)
2022-11-15 16:53:13 +03:00
map_test.v
builtin: fix m.len to 0, after calling map.clear() (#16720)
2022-12-22 21:36:33 +02:00
map.c.v
all: byte => u8
2022-04-15 14:58:56 +03:00
map.v
all: 2023 copyright
2023-03-28 22:55:57 +02:00
option.c.v
builtin: change IError msg and code to methods + fix vlib, add a deprecation notice for the old usages (#13041)
2022-02-11 15:52:33 +02:00
option.v
all: 2023 copyright
2023-03-28 22:55:57 +02:00
prealloc.c.v
vfmt: change all '$expr' to '${expr}' (#16428)
2022-11-15 16:53:13 +03:00
README.md
builtin: add more documentation (#13160)
2022-01-14 17:27:38 +02:00
rune_test.v
all: byte => u8
2022-04-15 14:58:56 +03:00
rune.v
all: 2023 copyright
2023-03-28 22:55:57 +02:00
sorted_map.v
checker: disallow struct int to ptr outside unsafe (#17923)
2023-04-13 07:38:21 +02:00
sorting_test.v
vfmt: change all '$expr' to '${expr}' (#16428)
2022-11-15 16:53:13 +03:00
string_charptr_byteptr_helpers.v
all: replace []byte with []u8
2022-04-15 15:35:35 +03:00
string_int_test.v
checker: more precise error handling of large binary literals like 0b1000_0000_0000_0000_0000_0000_0000_0000_0000_0000_0000_0000_0000_0000_0000_0000 (#16775)
2022-12-27 15:13:15 +02:00
string_interpolation.v
all: 2023 copyright
2023-03-28 22:55:57 +02:00
string_match_glob_test.v
all: replace "NB:" with "Note:" (docs/comments)
2022-03-06 20:01:22 +03:00
string_strip_margin_test.v
all: 2023 copyright
2023-03-28 22:55:57 +02:00
string_test.v
fmt: remove redundant parenthesis in the complex infix expr (#17873)
2023-04-04 13:47:48 +03:00
string_trim_indent_test.v
all: 2023 copyright
2023-03-28 22:55:57 +02:00
string.v
builtin: speed up string concatenation and repeat() method with vmemcpy instead of for loop for copying data (#18206)
2023-05-19 16:18:23 +03:00
utf8_test.v
vfmt: change all '$expr' to '${expr}' (#16428)
2022-11-15 16:53:13 +03:00
utf8.c.v
builtin: document string.to_wide() and string_from_wide()/1
2022-11-28 09:46:04 +02:00
utf8.v
all: 2023 copyright
2023-03-28 22:55:57 +02:00

README.md

Description:

builtin is a module that is implicitly imported by every V program.

It implements the builtin V types array, string, map.

It also implements builtin functions like println, eprintln, malloc, panic, print_backtrace.

The autogenerated documentation for builtin functions is lacking, so for these functions, please refer to the official V documentation.