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refactor(api): use a unpacker based on libmpack instead of msgpack-c

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Currently this is more or less a straight off reimplementation,
but this allow further optimizations down the line, especially
for avoiding memory allocations of rpc objects.

Current score for "make functionaltest; make oldtest" on a -DEXITFREE build:

is 117 055 352 xfree(ptr != NULL) calls (that's NUMBERWANG!).
This commit is contained in:
bfredl
2022-05-23 19:53:19 +02:00
parent d93ba03c71
commit d5f047bee0
9 changed files with 452 additions and 152 deletions
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17
src/nvim/rbuffer.c
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@@ -154,6 +154,23 @@ void rbuffer_consumed(RBuffer *buf, size_t count)
}
}
/// Use instead of rbuffer_consumed to use rbuffer in a linear, non-cyclic fashion.
///
/// This is generally usefull if we can guarantee to parse all input
/// except some small incomplete token, like when parsing msgpack.
void rbuffer_consumed_compact(RBuffer *buf, size_t count)
FUNC_ATTR_NONNULL_ALL
{
assert(buf->read_ptr <= buf->write_ptr);
rbuffer_consumed(buf, count);
if (buf->read_ptr > buf->start_ptr) {
assert((size_t)(buf->read_ptr - buf->write_ptr) == buf->size);
memmove(buf->start_ptr, buf->read_ptr, buf->size);
buf->read_ptr = buf->start_ptr;
buf->write_ptr = buf->read_ptr + buf->size;
}
}
// Higher level functions for copying from/to RBuffer instances and data
// pointers
size_t rbuffer_write(RBuffer *buf, const char *src, size_t src_size)