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Improved deserializeMsgPack() speed by reading several bytes at once

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This commit is contained in:
Benoit Blanchon
2019-10-14 12:02:26 +02:00
parent fd8f4eb3a6
commit 16fe3c0acc
11 changed files with 286 additions and 50 deletions
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80
extras/tests/MixedConfiguration/enable_progmem_1.cpp
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@@ -85,3 +85,83 @@ TEST_CASE("memcpy_P") {
CHECK(dst[2] == 'C');
CHECK(dst[3] == 0);
}
TEST_CASE("SafeCharPointerReader") {
using ARDUINOJSON_NAMESPACE::SafeFlashStringReader;
SECTION("read") {
SafeFlashStringReader reader(F("\x01\xFF"), 2);
REQUIRE(reader.read() == 0x01);
REQUIRE(reader.read() == 0xFF);
REQUIRE(reader.read() == -1);
REQUIRE(reader.read() == -1);
}
SECTION("readBytes() all at once") {
SafeFlashStringReader reader(F("ABCD"), 3);
char buffer[8] = "abcd";
REQUIRE(reader.readBytes(buffer, 4) == 3);
REQUIRE(buffer[0] == 'A');
REQUIRE(buffer[1] == 'B');
REQUIRE(buffer[2] == 'C');
REQUIRE(buffer[3] == 'd');
}
SECTION("readBytes() in two parts") {
SafeFlashStringReader reader(F("ABCDEF"), 6);
char buffer[8] = "abcdefg";
REQUIRE(reader.readBytes(buffer, 4) == 4);
REQUIRE(reader.readBytes(buffer + 4, 4) == 2);
REQUIRE(buffer[0] == 'A');
REQUIRE(buffer[1] == 'B');
REQUIRE(buffer[2] == 'C');
REQUIRE(buffer[3] == 'D');
REQUIRE(buffer[4] == 'E');
REQUIRE(buffer[5] == 'F');
REQUIRE(buffer[6] == 'g');
}
}
TEST_CASE("UnsafeFlashStringReader") {
using ARDUINOJSON_NAMESPACE::UnsafeFlashStringReader;
SECTION("read()") {
UnsafeFlashStringReader reader(F("\x01\xFF\x00\x12"));
REQUIRE(reader.read() == 0x01);
REQUIRE(reader.read() == 0xFF);
REQUIRE(reader.read() == 0);
REQUIRE(reader.read() == 0x12);
}
SECTION("readBytes() all at once") {
UnsafeFlashStringReader reader(F("ABCD"));
char buffer[8] = "abcd";
REQUIRE(reader.readBytes(buffer, 3) == 3);
REQUIRE(buffer[0] == 'A');
REQUIRE(buffer[1] == 'B');
REQUIRE(buffer[2] == 'C');
REQUIRE(buffer[3] == 'd');
}
SECTION("readBytes() in two parts") {
UnsafeFlashStringReader reader(F("ABCDEF"));
char buffer[8] = "abcdefg";
REQUIRE(reader.readBytes(buffer, 4) == 4);
REQUIRE(reader.readBytes(buffer + 4, 2) == 2);
REQUIRE(buffer[0] == 'A');
REQUIRE(buffer[1] == 'B');
REQUIRE(buffer[2] == 'C');
REQUIRE(buffer[3] == 'D');
REQUIRE(buffer[4] == 'E');
REQUIRE(buffer[5] == 'F');
REQUIRE(buffer[6] == 'g');
}
}