github_mirrors/vectorscan
3
0
Fork 1
mirror of https://github.com/VectorCamp/vectorscan.git synced 2025-11-19 10:34:25 +03:00
Code Issues Packages Projects Releases Wiki Activity

violet: initial implementation

Browse Source
This commit is contained in:
Alex Coyte
2016-07-15 13:07:00 +10:00
committed by Matthew Barr
parent b13a90e5d2
commit 5c5ec905cc
31 changed files with 3171 additions and 201 deletions
Download Patch File Download Diff File Expand all files Collapse all files

38
src/rose/rose_build_compile.cpp
View File

@@ -433,6 +433,9 @@ RoseRoleHistory findHistoryScheme(const RoseBuildImpl &tbi, const RoseEdge &e) {
// If the bounds are {0,0}, this role can only match precisely at EOD.
if (minBound == 0 && maxBound == 0) {
/* last byte history will squash the state byte so cannot have other
* succ */
assert(out_degree(u, g) == 1);
return ROSE_ROLE_HISTORY_LAST_BYTE;
}
@@ -915,19 +918,32 @@ void RoseBuildImpl::findTransientLeftfixes(void) {
continue;
}
u32 his = g[v].left.lag + max_width;
if (cc.streaming) {
/* STREAMING: transient prefixes must be able to run using history
* rather than storing state. */
u32 his = g[v].left.lag + max_width;
// If this vertex has an event literal, we need to add one to cope
// with it.
if (hasLiteralInTable(v, ROSE_EVENT)) {
his++;
}
// If this vertex has an event literal, we need to add one to cope
// with it.
if (hasLiteralInTable(v, ROSE_EVENT)) {
his++;
}
/* +1 as trigger must appear in main buffer and no byte is needed to
* decompress the state */
if (his <= cc.grey.maxHistoryAvailable + 1) {
transient.insert(left);
DEBUG_PRINTF("a transient leftfix has been spotted his=%u\n", his);
/* +1 as trigger must appear in main buffer and no byte is needed to
* decompress the state */
if (his <= cc.grey.maxHistoryAvailable + 1) {
transient.insert(left);
DEBUG_PRINTF("a transient leftfix spotted his=%u\n", his);
}
} else {
/* BLOCK: transientness is less important and more fuzzy, ideally
* it should be quick to calculate the state. No need to worry about
* history (and hence lag). */
if (max_width < depth(ROSE_BLOCK_TRANSIENT_MAX_WIDTH)) {
transient.insert(left);
DEBUG_PRINTF("a transient block leftfix spotted [%u]\n",
(u32)max_width);
}
}
}
}