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version 2.3.0_beta

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optimize PIChunkStream::readAll()
optimize PIEvaluator
This commit is contained in:
Пелипенко Иван
2020-08-24 02:08:23 +03:00
parent 6b70045914
commit f033119a8b
4 changed files with 194 additions and 166 deletions
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34
libs/main/core/pichunkstream.cpp
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@@ -80,11 +80,36 @@ int PIChunkStream::read() {
}
int PIChunkStream::peekVInt(Version version_, PIByteArray * data_, int pos, PIByteArray & hdr, uint & ret) {
switch (version_) {
case Version_1:
memcpy(&ret, data_->data(pos), 4);
return 4;
case Version_2: {
hdr.resize(4);
hdr.fill(uchar(0));
memcpy(hdr.data(), data_->data(pos), piMini(4, data_->size_s() - pos));
uchar hsz = 0;
ret = readVInt(hdr, &hsz);
return hsz;
}
default: break;
}
return 0;
}
void PIChunkStream::readAll() {
data_map.clear();
while (!atEnd()) {
read();
data_map[last_id] = last_data;
if (!data_) return;
int pos = 0, sz = data_->size_s();
uint csz = 0, cid = 0;
PIByteArray hdr;
while (pos < sz) {
pos += peekVInt((Version)version_, data_, pos, hdr, cid);
pos += peekVInt((Version)version_, data_, pos, hdr, csz);
data_map[cid] = PIPair<int, int>(pos, csz);
pos += csz;
}
}
@@ -111,7 +136,7 @@ void PIChunkStream::_init() {
}
uint PIChunkStream::readVInt(PIByteArray & s) {
uint PIChunkStream::readVInt(PIByteArray & s, uchar * bytes_cnt) {
if (s.isEmpty()) return 0;
uchar bytes[4]; s >> bytes[0];
uchar abc = 0;
@@ -122,6 +147,7 @@ uint PIChunkStream::readVInt(PIByteArray & s) {
s >> bytes[abc + 1];
} else break;
}
if (bytes_cnt) *bytes_cnt = (abc + 1);
uint ret = 0;
for (int i = 0; i <= abc; ++i) {
ret += (bytes[i] << (8 * ((int)abc - i)));