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416fd86676
- Emulator can now test the αcτµαlly pδrταblε εxεcµταblε bootloader - Whipped up a webserver named redbean. It services 150k requests per second on a single core. Bundling assets inside zip enables extremely fast serving for two reasons. The first is that zip central directory lookups go faster than stat() system calls. The second is that both zip and gzip content-encoding use DEFLATE, therefore, compressed responses can be served via the sendfile() system call which does an in-kernel copy directly from the zip executable structure. Also note that red bean zip executables can be deployed easily to all platforms, since these native executables work on Linux, Mac, BSD, and Windows. - Address sanitizer now works very well
42 lines
1.4 KiB
C
42 lines
1.4 KiB
C
#include "libc/limits.h"
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#include "libc/mem/mem.h"
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#include "third_party/dlmalloc/dlmalloc.h"
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/**
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* Sets memory allocation parameter.
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*
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* The format is to provide a (parameter-number, parameter-value) pair.
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* mallopt then sets the corresponding parameter to the argument value
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* if it can (i.e., so long as the value is meaningful), and returns 1
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* if successful else 0. SVID/XPG/ANSI defines four standard param
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* numbers for mallopt, normally defined in malloc.h. None of these are
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* use in this malloc, so setting them has no effect. But this malloc
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* also supports other options in mallopt:
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*
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* Symbol param # default allowed param values
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* M_TRIM_THRESHOLD -1 2*1024*1024 any (-1U disables trimming)
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* M_GRANULARITY -2 page size any power of 2 >= page size
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* M_MMAP_THRESHOLD -3 256*1024 any (or 0 if no MMAP support)
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*/
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bool32 mallopt(int param_number, int value) {
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size_t val;
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ensure_initialization();
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val = (value == -1) ? SIZE_MAX : (size_t)value;
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switch (param_number) {
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case M_TRIM_THRESHOLD:
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g_mparams.trim_threshold = val;
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return true;
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case M_GRANULARITY:
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if (val >= g_mparams.page_size && ((val & (val - 1)) == 0)) {
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g_mparams.granularity = val;
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return true;
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} else {
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return false;
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}
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case M_MMAP_THRESHOLD:
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g_mparams.mmap_threshold = val;
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return true;
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default:
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return false;
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}
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}
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