mirrors/ladybird
1
0
Fork 0
mirror of https://github.com/LadybirdBrowser/ladybird.git synced 2025-01-26 19:22:30 -05:00
Code Issues Projects Releases Packages Wiki Activity
2153 commits 1 branch 0 tags 472 MiB
Commit graph

909 commits

Author SHA1 Message Date
Andreas Kling
52139a2392 DiskBackedFS: Flush write cache if it reaches 32 entries before sync. 
This is just to avoid chewing through all of the kernel memory. There is a
lot of room for improvement here, and 32 is just a number from the place
where numbers come from.
 2019-04-27 17:30:32 +02:00
Andreas Kling
dde8d90747 Ext2FS: Fix accidental zero-fill when appending to a file. 
We were using the old file size, rather than the new file size, to determine
how much to zero-fill in the last block of a file.
 2019-04-27 17:14:27 +02:00
Andreas Kling
679ac386eb Kernel: "Succeed" quietly for zero-length read() and write(). 2019-04-27 16:17:24 +02:00
Andreas Kling
490e89e240 LibC: Add execvpe() and make execvp()'ed children inherit environment. 2019-04-26 03:16:26 +02:00
Andreas Kling
1163e0a030 Kernel: Don't count kfree(nullptr) as a call to kfree(). 
This was causing the kmalloc/kfree call delta to accumulate errors.
 2019-04-25 23:18:11 +02:00
Andreas Kling
44673c4f3b Kernel: Add a write cache to DiskBackedFS. 
This way you can spam small write()s on a file without the kernel writing
to disk every single time. Flushes are included in the FS::sync() operation
and will get triggered regularly by syncd. :^)
 2019-04-25 22:05:53 +02:00
Andreas Kling
e0cdc5db0d Ext2FS: Reduce debug spam in block allocation. 2019-04-25 22:05:32 +02:00
Andreas Kling
6c950f8f83 Kernel: Dump stack trace when kmalloc() fails. 2019-04-25 15:58:49 +02:00
Andreas Kling
d5578826af Kernel: Make it possible to look up FIFO's by ID. 
This will be useful when implementing the /proc/PID/fd/N links where N is
a file descriptor referring to a FIFO.
 2019-04-25 13:53:24 +02:00
Andreas Kling
16f6a3af3c Allow passing extra args to qemu via a SERENITY_EXTRA_QEMU_ARGS env var. 2019-04-24 21:06:16 +02:00
Andreas Kling
d7cf841d3d Kernel: Add a comment block about the Device class. 2019-04-24 02:37:57 +02:00
Andreas Kling
ca9ed13643 Kernel: Simplify Device::open(). 2019-04-24 02:20:14 +02:00
Andreas Kling
c5c4e54a67 Kernel: Process destruction should destroy all child threads. 
We were only destroying the main thread when a process died, leaving any
secondary threads around. They couldn't run, but because they were still
in the global thread list, strange things could happen since they had some
now-stale pointers to their old process.
 2019-04-23 22:17:01 +02:00
Andreas Kling
0c898e3c2c Put assertions behind a DEBUG flag to make it easy to build without them. 2019-04-23 21:52:02 +02:00
Andreas Kling
f3754b8429 Build: Pass --gc-sections to the linker in all builds. 
This removes unused sections from the output and reduces the binary size
of everything we compile.
 2019-04-23 21:37:10 +02:00
Andreas Kling
f042b3adeb Kernel: Make the right shift key work. 
I never realized the right shift key wasn't hooked up since my left pinky
always hovers over the left shift key, ready to rock.
 2019-04-23 20:47:45 +02:00
Andreas Kling
fd500c79d6 Ext2S: Fix off-by-one error in block allocation. 2019-04-23 16:38:45 +02:00
Andreas Kling
b041fc57de Ext2FS: Bitmaps aren't always at full capacity. 
Block bitmaps only have (blocks_per_group) entries, while inode bitmaps
only have (inodes_per_group) entries.
 2019-04-23 16:21:07 +02:00
Andreas Kling
14ceabeca8 Ext2FS: More bitmap misunderstanding cleanups. 
Inode bitmaps are also only ever one block.
 2019-04-23 15:07:07 +02:00
Andreas Kling
1bf37db9a9 Ext2FS: Simplify block bitmap stuff. 
Block bitmaps are only ever one block in size. I don't know why I thought
otherwise, but use this info to simplify the code. :^)
 2019-04-23 14:51:47 +02:00
Andreas Kling
58240fdb33 Do a pass of compiler warning fixes. 
This is really making me question not using 64-bit integers more.
 2019-04-23 13:00:53 +02:00
Andreas Kling
243e1d8462 Kernel: Use rep insw/outsw for IDE transfers. 
There are much faster ways to do disk transfers, but I'm not implementing
those today. In the meantime, this is slightly nicer. :^)
 2019-04-23 03:45:55 +02:00
Andreas Kling
37498c1566 Kernel: Send IDE flush command after writing sectors. 2019-04-23 03:16:47 +02:00
Andreas Kling
11e7ce60e5 Kernel: Use IDE LBA addressing instead of the long-obsolete C/H/S. 2019-04-23 02:26:51 +02:00
Andreas Kling
2d7cad6a16 Kernel: Make sure we don't use any FPU/MMX/SSE instructions. 2019-04-22 23:38:33 +02:00
Andreas Kling
5c68929aa1 Kernel: Add a systrace() syscall and implement /bin/strace using it. 
Calling systrace(pid) gives you a file descriptor with a stream of the
syscalls made by a peer process. The process must be owned by the same
UID who calls systrace(). :^)
 2019-04-22 18:44:45 +02:00
Andreas Kling
6693cfb26a Kernel: Don't use MMX memcpy() in the kernel. 
I just discovered the hard way that clobbering FPU/MMX/SSE registers in the
kernel makes things very confusing for userspace (and other kernel threads.)

Let's banish all of those things from the kernel to keep things simple.
 2019-04-22 17:13:18 +02:00
Andreas Kling
a9d09e9020 Kernel: Get rid of the "cool globals" thingy. 
This was something I used while debugging with Computron. I haven't needed
it for months, so let's get rid of it. It's trivial to readd if needed.
 2019-04-21 12:33:14 +02:00
Andreas Kling
57da00b731 Include Makefile.common in all other Makefiles. 2019-04-21 04:09:39 +02:00
Andreas Kling
5f63f8120c Kernel: Remove "restorer" field from SignalActionData. 
I was originally implementing signals by looking at some man page about
sigaction() to see how it works. It seems like the restorer thingy is
system-specific and not required by POSIX, so let's get rid of it.
 2019-04-20 19:32:14 +02:00
Andreas Kling
5562ab3f5a Kernel: Remove some more unnecessary Thread members. 2019-04-20 19:29:48 +02:00
Andreas Kling
b2ebf6c798 Kernel: Shrink Thread by making kernel resume TSS heap-allocated. 2019-04-20 19:23:45 +02:00
Andreas Kling
ec365b82d5 Kernel: Make the colonel run at "Idle" priority (the lowest possible.) 
This means it won't hog the CPU for more than a single timeslice. :^)
 2019-04-20 15:58:45 +02:00
Andreas Kling
ab94a6be00 AK: Add String::copy(BufferType) helper. 
This will create a String from any BufferType that has data() and size().
 2019-04-20 14:13:40 +02:00
Andreas Kling
5eedb22834 Sprinkle use of AK::Vector in various places. 
Some of these are less helpful than others. Avoiding a bunch of mallocs
in the event loop wakeup code is definitely nice.
 2019-04-20 14:02:19 +02:00
Andreas Kling
301a269ca0 Get rid of SERENITY macro since the compiler already defines __serenity__ 
This makes it a bit easier to use AK templates out-of-tree.
 2019-04-20 12:58:49 +02:00
Andreas Kling
e24e486714 Snake: Flesh out a basic snake game :^) 2019-04-20 03:24:50 +02:00
Andreas Kling
0e6b273620 LibGUI: Start working on GTableView inline editing. 
This is pretty shaky still, but the basic idea is that you subclass GModel
and return true for editable indices. The table view also needs to have its
editable flag set.
 2019-04-18 22:27:14 +02:00
Andreas Kling
3817f5f619 Kernel+LibC: Add a DebugLogDevice that forwards everything to I/O port 0xe9. 
This is then used to implement the userspace dbgprintf() in a far more
efficient way than what we had before. :^)
 2019-04-18 16:08:52 +02:00
Andreas Kling
c02c6fef28 Kernel+ProcessManager: Show per-process syscall counts. 
Added a simple syscall counter to the /proc/all contents. :^)
 2019-04-17 23:16:14 +02:00
Andreas Kling
c59f8cd663 Kernel: Scheduler donations need to verify that the beneficiary is valid. 
Add a Thread::is_thread(void*) helper that we can use to check that the
incoming donation beneficiary is a valid thread. The O(n) here is a bit sad
and we should eventually rethink the process/thread table data structures.
 2019-04-17 12:41:51 +02:00
Andreas Kling
6bb0dbe8bf Kernel: Lock::unlock_if_locked() should never donate to holder. 
Since we're not interested in taking the lock if it's already held,
there's no need to donate the remainder of our time slice to the holder.
 2019-04-17 12:37:44 +02:00
Andreas Kling
33920df299 AK: Try to use StringViews more for substrings and splitting. 2019-04-16 02:39:16 +02:00
Andreas Kling
1debc0a78c Kernel: Reduce kmallocing in all_processes() and all_pids(). 2019-04-16 00:37:35 +02:00
Andreas Kling
2533e0b57b Kernel: Reduce kmallocing in /proc/all and /proc/memstat. 2019-04-16 00:36:17 +02:00
Andreas Kling
88f03f86ff Kernel: Have TTY subclasses cache their tty_name/pts_name. 2019-04-16 00:35:02 +02:00
Andreas Kling
d384c7815f Kernel: Make it possible to have kmalloc() dump call stacks. 
This can be enabled at any time using a sysctl:

    sysctl kmalloc_stacks=1

The stacks will go to the debugger output only.
 2019-04-15 23:58:48 +02:00
Andreas Kling
fa89446cb6 Kernel: Make symbolication callable from kmalloc(). 
It wasn't possible to symbolicate from kmalloc(), since symbolication would
call kmalloc(). :^)
 2019-04-15 23:50:25 +02:00
Andreas Kling
ae0dc22716 Kernel: Make validate_read_from_kernel() return early for nullptr checks. 
Null pointers are always invalid, so don't bother going through all the
various checks for them.
 2019-04-15 23:48:31 +02:00
Andreas Kling
e9c0f4567d Kernel+ProcessManager: Expose the number of kmalloc/kfree calls. 
This will be very helpful in tracking down unwanted kmalloc traffic. :^)
 2019-04-15 19:43:12 +02:00