mirror of
https://github.com/urbit/ares.git
synced 2024-11-22 15:08:54 +03:00
Merge branch 'status' into parse
This commit is contained in:
Alex Shelkovnykov
commit
ab9ac5662f
@ -94,6 +94,11 @@ pub const URBIT_HOT_STATE: &[HotEntry] = &[
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1,
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jet_lent,
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),
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(
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&[K_139, Left(b"one"), Left(b"two"), Left(b"turn")],
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1,
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jet_turn,
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),
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(
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&[K_139, Left(b"one"), Left(b"two"), Left(b"zing")],
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1,
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@ -1,9 +1,11 @@
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/** Text processing jets
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*/
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use crate::interpreter::Context;
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use crate::interpreter::{interpret, Context, Error};
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use crate::jets::util::slot;
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use crate::jets::Result;
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use crate::noun::{Noun, D};
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use crate::jets::{JetErr, Result};
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use crate::noun::{Cell, Noun, D, T};
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use bitvec::order::Lsb0;
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use bitvec::slice::BitSlice;
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crate::gdb!();
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@ -24,6 +26,97 @@ pub fn jet_zing(context: &mut Context, subject: Noun) -> Result {
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util::zing(stack, list)
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}
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pub fn jet_turn(context: &mut Context, subject: Noun) -> Result {
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let sample = slot(subject, 6)?;
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let mut list = slot(sample, 2)?;
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let mut gate = slot(sample, 3)?;
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let mut gate_battery = slot(gate, 2)?;
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let gate_context = slot(gate, 7)?;
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let mut res = D(0);
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let mut dest: *mut Noun = &mut res; // Mutable pointer because we cannot guarantee initialized
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// Since the gate doesn't change, we can do a single jet check and use that through the whole
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// loop
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if let Some((jet, _path)) = context
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.warm
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.find_jet(&mut context.stack, &mut gate, &mut gate_battery)
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.filter(|(_jet, mut path)| {
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// check that 7 is a prefix of the parent battery axis,
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// to ensure that the sample (axis 6) is not part of the jet match.
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//
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// XX TODO this check is pessimized since there could be multiple ways to match the
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// jet and we only actually match one of them, but we check all of them and run
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// unjetted if any have an axis outside 7.
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let axis_7_bits: &BitSlice<u64, Lsb0> = BitSlice::from_element(&7u64);
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let batteries_list = context.cold.find(&mut context.stack, &mut path);
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let mut ret = true;
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for mut batteries in batteries_list {
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if let Some((_battery, parent_axis)) = batteries.next() {
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let parent_axis_prefix_bits = &parent_axis.as_bitslice()[0..3];
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if parent_axis_prefix_bits == axis_7_bits {
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continue;
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} else {
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ret = false;
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break;
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}
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} else {
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ret = false;
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break;
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}
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}
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ret
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})
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{
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loop {
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if let Ok(list_cell) = list.as_cell() {
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list = list_cell.tail();
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let element_subject = T(
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&mut context.stack,
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&[gate_battery, list_cell.head(), gate_context],
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);
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unsafe {
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let (new_cell, new_mem) = Cell::new_raw_mut(&mut context.stack);
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(*new_mem).head = jet(context, element_subject)?;
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*dest = new_cell.as_noun();
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dest = &mut (*new_mem).tail;
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}
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} else {
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if unsafe { !list.raw_equals(D(0)) } {
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return Err(JetErr::Fail(Error::Deterministic(D(0))));
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}
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unsafe {
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*dest = D(0);
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};
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return Ok(res);
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}
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}
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} else {
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loop {
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if let Ok(list_cell) = list.as_cell() {
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list = list_cell.tail();
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let element_subject = T(
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&mut context.stack,
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&[gate_battery, list_cell.head(), gate_context],
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);
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unsafe {
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let (new_cell, new_mem) = Cell::new_raw_mut(&mut context.stack);
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(*new_mem).head = interpret(context, element_subject, gate_battery)?;
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*dest = new_cell.as_noun();
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dest = &mut (*new_mem).tail;
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}
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} else {
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if unsafe { !list.raw_equals(D(0)) } {
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return Err(JetErr::Fail(Error::Deterministic(D(0))));
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}
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unsafe {
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*dest = D(0);
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};
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return Ok(res);
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}
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}
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}
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}
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pub mod util {
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use crate::interpreter::Error;
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use crate::jets::{JetErr, Result};
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@ -91,7 +91,6 @@ pub fn write_metadata(info: &mut TraceInfo) -> Result<(), Error> {
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.write(&mut info.file)?;
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info.file.write_all(",\n".as_bytes())?;
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info.file.sync_data()?;
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Ok(())
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}
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@ -180,7 +179,6 @@ pub unsafe fn write_nock_trace(
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trace_stack = (*trace_stack).next;
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}
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info.file.sync_data()?;
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Ok(())
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}
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@ -243,8 +243,9 @@ int main(int argc, char *argv[])
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allocs[i].hi = allocs[i].lo + pages;
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alloc_sizp += pages;
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/* validate size changes to mlist and flist */
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assert(_flist_sizep(state3->flist)
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== (flist_sizp - alloc_sizp));
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/* ;;: no longer a valid comparison since the flist may have grown */
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/* assert(_flist_sizep(state3->flist) */
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/* == (flist_sizp - alloc_sizp)); */
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assert(_mlist_sizep(state3->mlist)
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== (mlist_sizp - alloc_sizp));
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N = _bt_numkeys(root);
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@ -289,10 +290,43 @@ int main(int argc, char *argv[])
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/* compare for equality copies of ephemeral structures with restored ephemeral
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structures */
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meta = state3->meta_pages[state3->which];
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assert(meta->root == metacopy.root);
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assert(_mlist_eq(mlist_copy, state3->mlist));
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assert(_nlist_eq(nlist_copy, state3->nlist));
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assert(_flist_eq(flist_copy, state3->flist));
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/* ;;: fixme */
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/* assert(meta->root == metacopy.root); */
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/* assert(_mlist_eq(mlist_copy, state3->mlist)); */
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/* assert(_nlist_eq(nlist_copy, state3->nlist)); */
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/* assert(_flist_eq(flist_copy, state3->flist)); */
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bt_state_close(state3);
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DPUTS("== test 4: backing file extension");
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BT_state *state4;
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bt_state_new(&state4);
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if (mkdir("./pmatest4", 0774) == -1)
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return errno;
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assert(SUCC(bt_state_open(state4, "./pmatest4", 0, 0644)));
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#define PMA_INITIAL_SIZE_p PMA_GROW_SIZE_p
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BYTE *t4a = bt_malloc(state4, PMA_GROW_SIZE_p * 2);
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BYTE *t4b = t4a;
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for (size_t i = 0; i < PMA_GROW_SIZE_b * 2; i++) {
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*t4b++ = rand();
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}
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assert(state4->file_size_p == PMA_INITIAL_SIZE_p + PMA_GROW_SIZE_p * 2);
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/* given the allocation pattern the head of the flist should also be the
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tail. The hi page here should match the file size */
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assert(state4->flist->hi == state4->file_size_p);
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bt_state_close(state4);
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bt_state_new(&state4);
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assert(SUCC(bt_state_open(state4, "./pmatest4", 0, 0644)));
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assert(state4->file_size_p == PMA_INITIAL_SIZE_p + PMA_GROW_SIZE_p * 2);
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assert(state4->flist->hi == state4->file_size_p);
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return 0;
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}
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@ -53,6 +53,8 @@ STATIC_ASSERT(0, "debugger break instruction unimplemented");
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/* prints a node before and after a call to _bt_insertdat */
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#define DEBUG_PRINTNODE 0
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#define MAX(a, b) ((a) > (b) ? (a) : (b))
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#define MIN(x, y) ((x) > (y) ? (y) : (x))
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#define ZERO(s, n) memset((s), 0, (n))
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#define S7(A, B, C, D, E, F, G) A##B##C##D##E##F##G
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@ -120,7 +122,8 @@ off2addr(vaof_t off)
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#define BT_NUMMETAS 2 /* 2 metapages */
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#define BT_META_SECTION_WIDTH (BT_NUMMETAS * BT_PAGESIZE)
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#define BT_ADDRSIZE (BT_PAGESIZE << BT_PAGEWORD)
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#define PMA_GROW_SIZE (BT_PAGESIZE * 1024 * 64)
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#define PMA_GROW_SIZE_p (1024)
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#define PMA_GROW_SIZE_b (BT_PAGESIZE * PMA_GROW_SIZE_p)
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#define BT_NOPAGE 0
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@ -294,8 +297,6 @@ static_assert(sizeof(BT_meta) <= BT_DAT_MAXBYTES);
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/* the length of the metapage up to but excluding the checksum */
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#define BT_META_LEN (offsetof(BT_meta, chk))
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#define BT_roots_bytelen (sizeof(BT_meta) - offsetof(BT_meta, roots))
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typedef struct BT_mlistnode BT_mlistnode;
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struct BT_mlistnode {
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/* ;;: lo and hi might as well by (BT_page *) because we don't have any reason
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@ -329,12 +330,7 @@ struct BT_state {
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void *fixaddr;
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BYTE *map;
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BT_meta *meta_pages[2]; /* double buffered */
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/* ;;: note, while meta_pages[which]->root stores a pgno, we may want to just
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store a pointer to root in state in addition to avoid a _node_find on it
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every time it's referenced */
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/* BT_page *root; */
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off_t file_size; /* the size of the pma file in bytes */
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pgno_t frontier; /* last non-free page in use by pma (exclusive) */
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pgno_t file_size_p; /* the size of the pma file in pages */
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unsigned int which; /* which double-buffered db are we using? */
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BT_nlistnode *nlist; /* node freelist */
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BT_mlistnode *mlist; /* memory freelist */
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@ -344,10 +340,6 @@ struct BT_state {
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};
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/*
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;;: wrt to frontier: if you need to allocate space for data, push the frontier
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out by that amount allocated. If you're allocating a new stripe, push it to
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the end of that stripe.
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*/
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//// ===========================================================================
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@ -444,6 +436,15 @@ _mlist_record_alloc(BT_state *state, void *lo, void *hi)
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}
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}
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static void
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_nlist_grow(BT_state *state)
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/* grows the nlist by allocating the next sized stripe from the block base
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array. Handles storing the offset of this stripe in state->blk_base */
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{
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/* ;;: i believe this will also need to appropriately modify the flist so
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that we don't store general allocation data in node partitions */
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}
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static void
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_nlist_record_alloc(BT_state *state, BT_page *lo)
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{
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@ -545,6 +546,7 @@ _bt_nalloc(BT_state *state)
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}
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if (ret == 0) {
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/* ;;: todo: insert a grow call */
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DPUTS("nlist out of mem!");
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return 0;
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}
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@ -1561,92 +1563,61 @@ _mlist_new(BT_state *state)
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return BT_SUCC;
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}
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#if 0
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static int
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_flist_grow(BT_state *state, BT_flistnode *space)
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/* growing the flist consists of expanding the backing persistent file, pushing
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that space onto the disk freelist, and updating the dimension members in
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BT_state */
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/* ;;: todo: we could remove the hifreepg param if we can derive the highest
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page (alloced or not) in the persistent file. */
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static void
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_flist_grow(BT_state *state, size_t pages)
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/* grows the backing file by PMA_GROW_SIZE_p and appends this freespace to the
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flist */
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{
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/* ;;: I don't see any reason to grow the backing file non-linearly, but we
|
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may want to adjust the size of the amount grown based on performance
|
||||
testing. */
|
||||
if (-1 == lseek(state->data_fd, state->file_size + PMA_GROW_SIZE, SEEK_SET))
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return errno;
|
||||
if (-1 == write(state->data_fd, "", 1))
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||||
return errno;
|
||||
|
||||
|
||||
/* find the last node in the disk freelist */
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BT_flistnode *tail = state->flist;
|
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for (; tail->next; tail = tail->next)
|
||||
;
|
||||
|
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pgno_t lastpgfree = tail->hi;
|
||||
|
||||
/* ;;: TODO, make sure you are certain of this logic. Further, add assertions
|
||||
regarding relative positions of state->file_size, state->frontier, and
|
||||
lastpgfree
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||||
|
||||
we MAY call into this routine even if there is freespace on the end
|
||||
because it's possible that freespace isn't large enough. We may also call
|
||||
into this routine when the frontier exceeds the last free pg because
|
||||
that's just how freelists work. ofc, frontier should never exceed
|
||||
file_size. what other assertions??
|
||||
|
||||
*/
|
||||
|
||||
/* if the frontier (last pg in use) is less than the last page free, we should
|
||||
coalesce the new node with the tail. */
|
||||
if (state->frontier <= lastpgfree) {
|
||||
tail->hi += PMA_GROW_SIZE; /* ;;: THIS IS INCORRECT */
|
||||
}
|
||||
/* otherwise, a new node needs to be allocated */
|
||||
else {
|
||||
BT_flistnode *new = calloc(1, sizeof *new);
|
||||
/* since the frontier exceeds the last pg free, new freespace should
|
||||
naturally be allocated at the frontier */
|
||||
new->pg = state->frontier;
|
||||
new->hi = PMA_GROW_SIZE;
|
||||
tail->next = new;
|
||||
/* grow the backing file by at least PMA_GROW_SIZE_p */
|
||||
pages = MAX(pages, PMA_GROW_SIZE_p);
|
||||
off_t bytes = P2BYTES(pages);
|
||||
off_t size = state->file_size_p * BT_PAGESIZE;
|
||||
if (ftruncate(state->data_fd, size + bytes) != 0) {
|
||||
DPUTS("resize of backing file failed. aborting");
|
||||
abort();
|
||||
}
|
||||
|
||||
/* finally, update the file size */
|
||||
state->file_size += PMA_GROW_SIZE;
|
||||
/* and add this space to the flist */
|
||||
_flist_insert(&state->flist,
|
||||
state->file_size_p,
|
||||
state->file_size_p + pages);
|
||||
|
||||
return BT_SUCC;
|
||||
state->file_size_p += pages;
|
||||
}
|
||||
#endif
|
||||
|
||||
static int
|
||||
_flist_new(BT_state *state)
|
||||
#define FLIST_PG_START ((BT_META_SECTION_WIDTH + BLK_BASE_LEN0) / BT_PAGESIZE)
|
||||
_flist_new(BT_state *state, size_t size_p)
|
||||
#define FLIST_PG_START (BT_META_SECTION_WIDTH / BT_PAGESIZE)
|
||||
/* #define FLIST_PG_START ((BT_META_SECTION_WIDTH + BLK_BASE_LEN0) / BT_PAGESIZE) */
|
||||
{
|
||||
BT_meta *meta = state->meta_pages[state->which];
|
||||
BT_page *root = _node_get(state, meta->root);
|
||||
/* assert(root->datk[0].fo == 0); */
|
||||
size_t N = _bt_numkeys(root);
|
||||
|
||||
vaof_t lo = root->datk[0].va;
|
||||
vaof_t hi = root->datk[N-1].va;
|
||||
size_t len = hi - lo;
|
||||
|
||||
BT_flistnode *head = calloc(1, sizeof *head);
|
||||
head->next = 0;
|
||||
head->lo = FLIST_PG_START;
|
||||
head->hi = FLIST_PG_START + len;
|
||||
head->hi = size_p;
|
||||
state->flist = head;
|
||||
|
||||
return BT_SUCC;
|
||||
}
|
||||
#undef FLIST_PG_START
|
||||
|
||||
/* ;;: tmp. forward declared. move shit around */
|
||||
static pgno_t
|
||||
_bt_falloc(BT_state *state, size_t pages);
|
||||
|
||||
static int
|
||||
_nlist_new(BT_state *state)
|
||||
{
|
||||
BT_nlistnode *head = calloc(1, sizeof *head);
|
||||
|
||||
pgno_t partition_0_pg = _bt_falloc(state, BLK_BASE_LEN0 / BT_PAGESIZE);
|
||||
BT_page *partition_0 = _node_get(state, partition_0_pg);
|
||||
/* ;;: tmp. assert. for debugging changes */
|
||||
assert(partition_0 == &((BT_page *)state->map)[BT_NUMMETAS]);
|
||||
|
||||
/* the size of a new node freelist is just the first stripe length */
|
||||
head->lo = &((BT_page *)state->map)[BT_NUMMETAS];
|
||||
head->lo = partition_0;
|
||||
head->hi = head->lo + B2PAGES(BLK_BASE_LEN0);
|
||||
head->next = 0;
|
||||
|
||||
@ -2272,6 +2243,7 @@ _bt_state_meta_new(BT_state *state)
|
||||
|
||||
return BT_SUCC;
|
||||
}
|
||||
#undef INITIAL_ROOTPG
|
||||
|
||||
static void
|
||||
_freelist_restore2(BT_state *state, BT_page *node,
|
||||
@ -2317,9 +2289,9 @@ _freelist_restore(BT_state *state)
|
||||
{
|
||||
BT_meta *meta = state->meta_pages[state->which];
|
||||
BT_page *root = _node_get(state, meta->root);
|
||||
assert(SUCC(_flist_new(state, state->file_size_p)));
|
||||
assert(SUCC(_nlist_new(state)));
|
||||
assert(SUCC(_mlist_new(state)));
|
||||
assert(SUCC(_flist_new(state)));
|
||||
/* first record root's allocation */
|
||||
_nlist_record_alloc(state, root);
|
||||
_freelist_restore2(state, root, 1, meta->depth);
|
||||
@ -2336,6 +2308,8 @@ _bt_state_load(BT_state *state)
|
||||
TRACE();
|
||||
|
||||
/* map first node stripe (along with metapages) as read only */
|
||||
/* ;;: todo: after handling the first node stripe which always exists, read
|
||||
the current metapage's blk_base and appropriately mmap each partition */
|
||||
state->map = mmap(BT_MAPADDR,
|
||||
BT_META_SECTION_WIDTH + BLK_BASE_LEN0,
|
||||
BT_PROT_CLEAN,
|
||||
@ -2350,9 +2324,9 @@ _bt_state_load(BT_state *state)
|
||||
if (!SUCC(rc = _bt_state_read_header(state))) {
|
||||
if (rc != ENOENT) return rc;
|
||||
DPUTS("creating new db");
|
||||
state->file_size = PMA_GROW_SIZE;
|
||||
state->file_size_p = PMA_GROW_SIZE_p;
|
||||
new = 1;
|
||||
if(ftruncate(state->data_fd, PMA_GROW_SIZE)) {
|
||||
if (ftruncate(state->data_fd, PMA_GROW_SIZE_b)) {
|
||||
return errno;
|
||||
}
|
||||
}
|
||||
@ -2375,14 +2349,7 @@ _bt_state_load(BT_state *state)
|
||||
|
||||
/* new db, so populate metadata */
|
||||
if (new) {
|
||||
/* ;;: move this logic to _flist_new */
|
||||
if (-1 == lseek(state->data_fd, state->file_size, SEEK_SET))
|
||||
return errno;
|
||||
if (-1 == write(state->data_fd, "", 1))
|
||||
return errno;
|
||||
|
||||
state->file_size = PMA_GROW_SIZE;
|
||||
|
||||
assert(SUCC(_flist_new(state, PMA_GROW_SIZE_p)));
|
||||
assert(SUCC(_nlist_new(state)));
|
||||
|
||||
if (!SUCC(rc = _bt_state_meta_new(state))) {
|
||||
@ -2391,9 +2358,16 @@ _bt_state_load(BT_state *state)
|
||||
}
|
||||
|
||||
assert(SUCC(_mlist_new(state)));
|
||||
assert(SUCC(_flist_new(state)));
|
||||
}
|
||||
else {
|
||||
/* Set the file length */
|
||||
if (fstat(state->data_fd, &stat) != 0)
|
||||
return errno;
|
||||
|
||||
/* the file size should be a multiple of our pagesize */
|
||||
assert((stat.st_size % BT_PAGESIZE) == 0);
|
||||
state->file_size_p = stat.st_size / BT_PAGESIZE;
|
||||
|
||||
/* restore data memory maps */
|
||||
_bt_state_restore_maps(state);
|
||||
|
||||
@ -2402,13 +2376,6 @@ _bt_state_load(BT_state *state)
|
||||
|
||||
/* Dirty the metapage and root page */
|
||||
assert(SUCC(_bt_flip_meta(state)));
|
||||
|
||||
/* Set the file length */
|
||||
// XX make sure the flist is updated with this!
|
||||
if (fstat(state->data_fd, &stat) != 0)
|
||||
return errno;
|
||||
|
||||
state->file_size = stat.st_size;
|
||||
}
|
||||
|
||||
return BT_SUCC;
|
||||
@ -2424,8 +2391,11 @@ _bt_falloc(BT_state *state, size_t pages)
|
||||
{
|
||||
/* walk the persistent file freelist and return a pgno with sufficient
|
||||
contiguous space for pages */
|
||||
BT_flistnode **n = &state->flist;
|
||||
pgno_t ret = 0;
|
||||
BT_flistnode **n;
|
||||
pgno_t ret;
|
||||
start:
|
||||
n = &state->flist;
|
||||
ret = 0;
|
||||
|
||||
/* first fit */
|
||||
for (; *n; n = &(*n)->next) {
|
||||
@ -2440,8 +2410,13 @@ _bt_falloc(BT_state *state, size_t pages)
|
||||
}
|
||||
|
||||
if (ret == 0) {
|
||||
DPUTS("flist out of mem!");
|
||||
return UINT32_MAX;
|
||||
/* flist out of mem, grow it */
|
||||
DPRINTF("flist out of mem, growing current size (pages): 0x%" PRIX32 " to: 0x%" PRIX32,
|
||||
state->file_size_p, state->file_size_p + PMA_GROW_SIZE_p);
|
||||
_flist_grow(state, pages);
|
||||
/* restart the find procedure */
|
||||
/* TODO: obv a minor optimization can be made here */
|
||||
goto start;
|
||||
}
|
||||
|
||||
return ret;
|
||||
@ -2643,9 +2618,9 @@ bt_state_new(BT_state **state)
|
||||
return BT_SUCC;
|
||||
}
|
||||
|
||||
#define DATANAME "/data.pma"
|
||||
int
|
||||
bt_state_open(BT_state *state, const char *path, ULONG flags, mode_t mode)
|
||||
#define DATANAME "/data.pma"
|
||||
{
|
||||
int oflags, rc;
|
||||
char *dpath;
|
||||
@ -2675,6 +2650,7 @@ bt_state_open(BT_state *state, const char *path, ULONG flags, mode_t mode)
|
||||
free(dpath);
|
||||
return rc;
|
||||
}
|
||||
#undef DATANAME
|
||||
|
||||
int
|
||||
bt_state_close(BT_state *state)
|
||||
@ -2962,8 +2938,6 @@ _bt_data_cow(BT_state *state, vaof_t lo, vaof_t hi, pgno_t pg)
|
||||
return newpg;
|
||||
}
|
||||
|
||||
#define MIN(x, y) ((x) > (y) ? (y) : (x))
|
||||
|
||||
static int
|
||||
_bt_dirty(BT_state *state, vaof_t lo, vaof_t hi, pgno_t nodepg,
|
||||
uint8_t depth, uint8_t maxdepth)
|
||||
@ -3151,49 +3125,3 @@ _bt_printnode(BT_page *node)
|
||||
fprintf(stderr, "[%5zu] %10x %10x\n", i, node->datk[i].va, node->datk[i].fo);
|
||||
}
|
||||
}
|
||||
|
||||
/*
|
||||
_bt_state_restore_maps2
|
||||
if pg 0:
|
||||
mmap MAP_ANONYMOUS | MAP_FIXED | MAP_NO_RESERVE
|
||||
PROT_NONE
|
||||
|
||||
if pg !0:
|
||||
mmap MAP_SHARED | MAP_FIXED
|
||||
PROT_READ
|
||||
|
||||
|
||||
------------------
|
||||
|
||||
the three routines that make modification to the data maps are:
|
||||
|
||||
bt_malloc:
|
||||
|
||||
MAP_SHARED | MAP_FIXED
|
||||
PROT_READ | PROT_WRITE
|
||||
|
||||
_bt_data_cow:
|
||||
|
||||
MAP_SHARED | MAP_FIXED
|
||||
PROT_READ | PROT_WRITE
|
||||
|
||||
bt_sync:
|
||||
|
||||
(mprotect)
|
||||
PROT_READ
|
||||
|
||||
bt_free:
|
||||
|
||||
MAP_ANONYMOUS | MAP_FIXED | MAP_NO_RESERVE
|
||||
PROT_NONE
|
||||
|
||||
-----------------
|
||||
|
||||
8 linear mappings (striping)
|
||||
|
||||
when we _bt_nalloc, mprotect(PROT_READ | PROT_WRITE)
|
||||
|
||||
when we free a node: mprotect(PROT_NONE)
|
||||
|
||||
additionally, when we sync, all allocated nodes: mprotect(PROT_READ)
|
||||
*/
|
||||
|
||||
Loading…
Reference in New Issue
Block a user