maksw/nt-lite
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add page cache with read-ahead and dirty writeback, file-backed and anonymous mmap with CoW, VAD-based virtual memory replacing the old user region model, PFN database with eviction and reclaim, file identity for cross-open section sharing, FAT32 path cache and per-file cluster chain cache, serial.sys for COM1 keyboard input, xHCI MSI with INTx and polled fallback, PciEnableMsiAuto, waitable input queue, KeWaitForAnyEvent, per-process thread info syscall, expanded kernel stats (PFN/PTE/VAD/file-cache/disk), pool allocation tags, async I/O user buffer locking, file flush on close, add docs.md.

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maksw committed 2026-06-20 13:17:39 +02:00
1 parent 61ec2442eb
commit 2c4a68a75f
114 files changed
+18069 -2620
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code/build/build.c
+67 -4
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@@ -30,6 +30,7 @@ static const Driver_Target PCI_BUS_DRIVER =
static const Driver_Target STANDALONE_DRIVERS[] = {
DRIVER_TARGET("ps2", "obj\\drivers\\ps2", "code\\drivers\\input\\ps2\\ps2.c code\\drivers\\input\\ps2\\ps2_i8042.c"),
DRIVER_TARGET("serial", "obj\\drivers\\serial", "code\\drivers\\input\\serial\\serial.c"),
DRIVER_TARGET_LIBS("ata", "obj\\drivers\\ata", "code\\drivers\\storage\\ata\\ata.c", "bin\\pci.lib"),
DRIVER_TARGET_LIBS("ahci", "obj\\drivers\\ahci", "code\\drivers\\storage\\ahci\\ahci.c code\\drivers\\storage\\ahci\\ahci_port.c", "bin\\pci.lib"),
DRIVER_TARGET("fat32", "obj\\drivers\\fat32", "code\\drivers\\fs\\fat32\\fat32.c code\\drivers\\fs\\fat32\\fat32_mount.c"),
@@ -46,7 +47,10 @@ void create_layout() {
"obj\\syscall", "obj\\runtime", "obj\\win32", "obj\\posix", "obj\\drivers", "obj\\init",
"obj\\shell_win32", "obj\\shell_posix", "obj\\shell_native",
"obj\\async_apc", "obj\\async_cancel", "obj\\edit", "obj\\httpget",
"obj\\tcpserve", "obj\\udp", "obj\\resolve", "obj\\ping", "obj\\doom", "obj\\video"
"obj\\tcpserve", "obj\\udp", "obj\\resolve", "obj\\ping", "obj\\doom", "obj\\video", "obj\\memtop",
"obj\\mmap_smoke", "obj\\pcache_smoke", "obj\\pcache_pressure", "obj\\dirty_writeback", "obj\\shared_mmap",
"obj\\pcache_invalidate", "obj\\pcache_mmap_read_reuse", "obj\\pcache_multithread",
"obj\\surface_smoke", "obj\\surface_invalid_rect", "obj\\surface_multithread_present"
};
for (size_t i = 0; i < NOB_ARRAY_LEN(dirs); i++) nob_mkdir_if_not_exists(dirs[i]);
nob_mkdir_if_not_exists(PCI_BUS_DRIVER.obj_dir);
@@ -71,6 +75,41 @@ Nob_Proc run_async(const char *cmd_str) {
return proc;
}
// Deletes stale object files from a target directory before compiling into it.
// Link commands use directory wildcards, so removed translation units can otherwise
// survive as old .obj files and keep unresolved references alive.
bool clean_object_directory(const char *obj_dir) {
const char *cmd = nob_temp_sprintf("if exist %s\\*.obj del /q %s\\*.obj", obj_dir, obj_dir);
return run_sync(cmd);
}
// Cleans object directories that are linked through wildcards.
// The build is intentionally simple and does not maintain per-file dependency state,
// so stale objects are more dangerous than recompiling a few extra files.
bool clean_build_object_directories(void) {
const char *dirs[] = {
"obj\\boot", "obj\\kernel", "obj\\lwip", "obj\\hal",
"obj\\syscall", "obj\\runtime", "obj\\win32", "obj\\posix",
"obj\\init", "obj\\shell_win32", "obj\\shell_posix", "obj\\shell_native",
"obj\\async_apc", "obj\\async_cancel", "obj\\edit", "obj\\httpget",
"obj\\tcpserve", "obj\\udp", "obj\\resolve", "obj\\ping",
"obj\\doom", "obj\\video", "obj\\memtop", "obj\\mmap_smoke", "obj\\pcache_smoke", "obj\\pcache_pressure", "obj\\dirty_writeback", "obj\\shared_mmap",
"obj\\pcache_invalidate", "obj\\pcache_mmap_read_reuse", "obj\\pcache_multithread",
"obj\\surface_smoke", "obj\\surface_invalid_rect", "obj\\surface_multithread_present"
};
for (size_t i = 0; i < NOB_ARRAY_LEN(dirs); i++) {
if (!clean_object_directory(dirs[i])) return false;
}
if (!clean_object_directory(PCI_BUS_DRIVER.obj_dir)) return false;
for (size_t i = 0; i < NOB_ARRAY_LEN(STANDALONE_DRIVERS); i++) {
if (!clean_object_directory(STANDALONE_DRIVERS[i].obj_dir)) return false;
}
return true;
}
// Creates an empty USB image the first time the build sees a missing usb.vhd.
// The image is intentionally left unmounted and unpopulated after formatting so
// callers can use it as removable FAT32 storage without the build overwriting it.
@@ -111,6 +150,7 @@ int main(int argc, char **argv) {
}
if (!create_usb_vhd_if_missing()) return 1;
create_layout();
if (!clean_build_object_directories()) return 1;
// Core images build sequentially because later images link against earlier import libraries.
nob_log(NOB_INFO, "--- Building Core Subsystems ---");
@@ -196,6 +236,17 @@ int main(int argc, char **argv) {
{"apps\\shell_native", "bin\\syscall.lib obj\\libc.obj obj\\runtime\\user_heap.obj obj\\runtime\\user_heap_exports.obj", "shell_native", "/ENTRY:main"},
{"tests\\async_apc", "bin\\syscall.lib obj\\libc.obj obj\\runtime\\user_heap.obj obj\\runtime\\user_heap_exports.obj", "async_apc", "/ENTRY:main"},
{"tests\\async_cancel", "bin\\syscall.lib obj\\libc.obj obj\\runtime\\user_heap.obj obj\\runtime\\user_heap_exports.obj", "async_cancel", "/ENTRY:main"},
{"tests\\mmap_smoke", "bin\\syscall.lib obj\\libc.obj obj\\runtime\\user_heap.obj obj\\runtime\\user_heap_exports.obj", "mmap_smoke", "/ENTRY:main"},
{"tests\\pcache_smoke", "bin\\syscall.lib obj\\libc.obj obj\\runtime\\user_heap.obj obj\\runtime\\user_heap_exports.obj", "pcache_smoke", "/ENTRY:main"},
{"tests\\pcache_pressure", "bin\\syscall.lib obj\\libc.obj obj\\runtime\\user_heap.obj obj\\runtime\\user_heap_exports.obj", "pcache_pressure", "/ENTRY:main"},
{"tests\\dirty_writeback", "bin\\syscall.lib obj\\libc.obj obj\\runtime\\user_heap.obj obj\\runtime\\user_heap_exports.obj", "dirty_writeback", "/ENTRY:main"},
{"tests\\shared_mmap", "bin\\syscall.lib obj\\libc.obj obj\\runtime\\user_heap.obj obj\\runtime\\user_heap_exports.obj", "shared_mmap", "/ENTRY:main"},
{"tests\\pcache_invalidate", "bin\\syscall.lib obj\\libc.obj obj\\runtime\\user_heap.obj obj\\runtime\\user_heap_exports.obj", "pcache_invalidate", "/ENTRY:main"},
{"tests\\pcache_mmap_read_reuse", "bin\\syscall.lib obj\\libc.obj obj\\runtime\\user_heap.obj obj\\runtime\\user_heap_exports.obj", "pcache_mmap_read_reuse", "/ENTRY:main"},
{"tests\\pcache_multithread", "bin\\syscall.lib obj\\libc.obj obj\\runtime\\user_heap.obj obj\\runtime\\user_heap_exports.obj", "pcache_multithread", "/ENTRY:main"},
{"tests\\surface_smoke", "bin\\syscall.lib obj\\libc.obj obj\\runtime\\user_heap.obj obj\\runtime\\user_heap_exports.obj", "surface_smoke", "/ENTRY:main"},
{"tests\\surface_invalid_rect", "bin\\syscall.lib obj\\libc.obj obj\\runtime\\user_heap.obj obj\\runtime\\user_heap_exports.obj", "surface_invalid_rect", "/ENTRY:main"},
{"tests\\surface_multithread_present", "bin\\syscall.lib obj\\libc.obj obj\\runtime\\user_heap.obj obj\\runtime\\user_heap_exports.obj", "surface_multithread_present", "/ENTRY:main"},
{"apps\\edit", "bin\\syscall.lib obj\\libc.obj obj\\runtime\\user_heap.obj obj\\runtime\\user_heap_exports.obj", "edit", "/ENTRY:main"},
{"apps\\httpget", "bin\\syscall.lib obj\\libc.obj obj\\runtime\\user_heap.obj obj\\runtime\\user_heap_exports.obj", "httpget", "/ENTRY:main"},
{"apps\\tcpserve", "bin\\syscall.lib obj\\libc.obj obj\\runtime\\user_heap.obj obj\\runtime\\user_heap_exports.obj", "tcpserve", "/ENTRY:main"},
@@ -203,7 +254,8 @@ int main(int argc, char **argv) {
{"apps\\resolve", "bin\\syscall.lib obj\\libc.obj obj\\runtime\\user_heap.obj obj\\runtime\\user_heap_exports.obj", "resolve", "/ENTRY:main"},
{"apps\\ping", "bin\\syscall.lib obj\\libc.obj obj\\runtime\\user_heap.obj obj\\runtime\\user_heap_exports.obj", "ping", "/ENTRY:main"},
{"apps\\doom", "bin\\syscall.lib obj\\libc.obj obj\\runtime\\user_heap.obj obj\\runtime\\user_heap_exports.obj", "doom", "/ENTRY:main"},
{"apps\\video", "bin\\win32.lib obj\\libc.obj code\\user\\apps\\video\\bink2w64.lib", "video", "/ENTRY:main"}
{"apps\\video", "bin\\syscall.lib obj\\libc.obj code\\user\\apps\\video\\bink2w64.lib", "video", "/ENTRY:main"},
{"apps\\memtop", "bin\\syscall.lib obj\\libc.obj obj\\runtime\\user_heap.obj obj\\runtime\\user_heap_exports.obj", "memtop", "/ENTRY:main"}
};
for (size_t i = 0; i < NOB_ARRAY_LEN(apps); i++) {
@@ -248,6 +300,7 @@ int main(int argc, char **argv) {
{"code\\settings.ini", "Z:\\system\\settings.ini"}, {"bin\\init.exe", "Z:\\system\\init.exe"},
{"bin\\pci.sys", "Z:\\drivers\\pci.sys"}, {"bin\\ps2.sys", "Z:\\drivers\\ps2.sys"},
{"bin\\serial.sys", "Z:\\drivers\\serial.sys"},
{"bin\\ata.sys", "Z:\\drivers\\ata.sys"}, {"bin\\ahci.sys", "Z:\\drivers\\ahci.sys"},
{"bin\\fat32.sys", "Z:\\drivers\\fat32.sys"}, {"bin\\vmwaresvga.sys", "Z:\\drivers\\vmwaresvga.sys"},
{"bin\\lwip.sys", "Z:\\drivers\\lwip.sys"}, {"bin\\usb.sys", "Z:\\drivers\\usb.sys"},
@@ -260,9 +313,19 @@ int main(int argc, char **argv) {
{"bin\\httpget.exe", "Z:\\apps\\httpget.exe"}, {"bin\\tcpserve.exe", "Z:\\apps\\tcpserve.exe"},
{"bin\\udp.exe", "Z:\\apps\\udp.exe"}, {"bin\\resolve.exe", "Z:\\apps\\resolve.exe"},
{"bin\\ping.exe", "Z:\\apps\\ping.exe"}, {"bin\\doom.exe", "Z:\\apps\\doom.exe"},
{"bin\\video.exe", "Z:\\apps\\video.exe"},
{"bin\\video.exe", "Z:\\apps\\video.exe"}, {"bin\\memtop.exe", "Z:\\apps\\memtop.exe"},
{"bin\\async_apc.exe", "Y:\\apps\\async_apc.exe"}, {"bin\\async_cancel.exe", "Y:\\apps\\async_cancel.exe"}
{"bin\\async_apc.exe", "Y:\\apps\\async_apc.exe"}, {"bin\\async_cancel.exe", "Y:\\apps\\async_cancel.exe"},
{"bin\\mmap_smoke.exe", "Y:\\apps\\mmap_smoke.exe"}, {"bin\\pcache_smoke.exe", "Y:\\apps\\pcache_smoke.exe"},
{"bin\\pcache_pressure.exe", "Y:\\apps\\pcache_pressure.exe"},
{"bin\\dirty_writeback.exe", "Y:\\apps\\dirty_writeback.exe"},
{"bin\\shared_mmap.exe", "Y:\\apps\\shared_mmap.exe"},
{"bin\\pcache_invalidate.exe", "Y:\\apps\\pcache_invalidate.exe"},
{"bin\\pcache_mmap_read_reuse.exe", "Y:\\apps\\pcache_mmap_read_reuse.exe"},
{"bin\\pcache_multithread.exe", "Y:\\apps\\pcache_multithread.exe"},
{"bin\\surface_smoke.exe", "Y:\\apps\\surface_smoke.exe"},
{"bin\\surface_invalid_rect.exe", "Y:\\apps\\surface_invalid_rect.exe"},
{"bin\\surface_multithread_present.exe", "Y:\\apps\\surface_multithread_present.exe"}
};
for (size_t i = 0; i < NOB_ARRAY_LEN(copies); i++) nob_copy_file(copies[i][0], copies[i][1]);