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doc: describe the new 4th column of the profiler output, and its compatibility with tcc & multithreading; describe better the stib comp parameter (#24358)

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Eliyaan (Nopana) 2025-04-30 07:20:12 +02:00 • committed by GitHub
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4
doc/docs.md
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@ -5532,7 +5532,9 @@ The generated profile.txt file will have lines with 4 columns:
1. How many times a function was called. 1. How many times a function was called.
2. How much time in total a function took (in ms). 2. How much time in total a function took (in ms).
3. How much time on average, a call to a function took (in ns). 3. How much time on average, a call to a function took (in ns).
4. The name of the v function. 4. How much time a function took (in ms), on its own, without the calls inside it.
It is reliable for multithreaded programs, when tcc is not used.
5. The name of the v function.
You can sort on column 3 (average time per function) using: You can sort on column 3 (average time per function) using:
`sort -n -k3 profile.txt|tail` `sort -n -k3 profile.txt|tail`

4
vlib/stbi/stbi.c.v
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@ -210,6 +210,7 @@ fn C.stbi_write_jpg(filename &char, w int, h int, comp int, buffer &u8, quality
// stbi_write_png write on path a PNG file // stbi_write_png write on path a PNG file
// row_stride_in_bytes is usually equal to: w * comp // row_stride_in_bytes is usually equal to: w * comp
// comp is the number of channels
pub fn stbi_write_png(path string, w int, h int, comp int, buf &u8, row_stride_in_bytes int) ! { pub fn stbi_write_png(path string, w int, h int, comp int, buf &u8, row_stride_in_bytes int) ! {
if 0 == C.stbi_write_png(&char(path.str), w, h, comp, buf, row_stride_in_bytes) { if 0 == C.stbi_write_png(&char(path.str), w, h, comp, buf, row_stride_in_bytes) {
return error('stbi_image failed to write png file to "${path}"') return error('stbi_image failed to write png file to "${path}"')
@ -217,6 +218,7 @@ pub fn stbi_write_png(path string, w int, h int, comp int, buf &u8, row_stride_i
} }
// stbi_write_png write on path a BMP file // stbi_write_png write on path a BMP file
// comp is the number of channels
pub fn stbi_write_bmp(path string, w int, h int, comp int, buf &u8) ! { pub fn stbi_write_bmp(path string, w int, h int, comp int, buf &u8) ! {
if 0 == C.stbi_write_bmp(&char(path.str), w, h, comp, buf) { if 0 == C.stbi_write_bmp(&char(path.str), w, h, comp, buf) {
return error('stbi_image failed to write bmp file to "${path}"') return error('stbi_image failed to write bmp file to "${path}"')
@ -224,6 +226,7 @@ pub fn stbi_write_bmp(path string, w int, h int, comp int, buf &u8) ! {
} }
// stbi_write_png write on path a TGA file // stbi_write_png write on path a TGA file
// comp is the number of channels
pub fn stbi_write_tga(path string, w int, h int, comp int, buf &u8) ! { pub fn stbi_write_tga(path string, w int, h int, comp int, buf &u8) ! {
if 0 == C.stbi_write_tga(&char(path.str), w, h, comp, buf) { if 0 == C.stbi_write_tga(&char(path.str), w, h, comp, buf) {
return error('stbi_image failed to write tga file to "${path}"') return error('stbi_image failed to write tga file to "${path}"')
@ -233,6 +236,7 @@ pub fn stbi_write_tga(path string, w int, h int, comp int, buf &u8) ! {
// stbi_write_png write on path a JPG file // stbi_write_png write on path a JPG file
// quality select the compression quality of the JPG // quality select the compression quality of the JPG
// quality is between 1 and 100. Higher quality looks better but results in a bigger image. // quality is between 1 and 100. Higher quality looks better but results in a bigger image.
// comp is the number of channels
pub fn stbi_write_jpg(path string, w int, h int, comp int, buf &u8, quality int) ! { pub fn stbi_write_jpg(path string, w int, h int, comp int, buf &u8, quality int) ! {
if 0 == C.stbi_write_jpg(&char(path.str), w, h, comp, buf, quality) { if 0 == C.stbi_write_jpg(&char(path.str), w, h, comp, buf, quality) {
return error('stbi_image failed to write jpg file to "${path}"') return error('stbi_image failed to write jpg file to "${path}"')