traplol / little-lang Goto Github PK
View Code? Open in Web Editor NEWa simple interpreted programming language
a simple interpreted programming language
When I do a "stress testing" for a simple while-loop:
mut x = 10000000
while x > 0 {
x = x - 1
}
It fills all RAM (can consume 2+ GB) for that loop. I has checked with valgrind tool (reducing x to 1000), and I got:
==2780== HEAP SUMMARY:
==2780== in use at exit: 241,023 bytes in 8,519 blocks
==2780== total heap usage: 8,679 allocs, 160 frees, 266,400 bytes allocated
==2780==
==2780== 31 bytes in 1 blocks are definitely lost in loss record 280 of 506
==2780== at 0x4C2AC3D: malloc (vg_replace_malloc.c:299)
==2780== by 0x51C5839: strdup (strdup.c:42)
==2780== by 0x40667B: LexerMake (lexer.c:355)
==2780== by 0x406D54: LittleLangMachineMakeLexer (little_lang_machine.c:150)
==2780== by 0x407546: LittleLangMachineInit (little_lang_machine.c:365)
==2780== by 0x40687F: main (little_lang.c:10)
==2780==
==2780== 32 bytes in 1 blocks are definitely lost in loss record 379 of 506
==2780== at 0x4C2C9B4: calloc (vg_replace_malloc.c:711)
==2780== by 0x40CB3E: ValueAllocNoGC (value.c:65)
==2780== by 0x40D013: ValueMakeType (value.c:210)
==2780== by 0x4022D6: GlobalsInitTypeInfos (globals.c:51)
==2780== by 0x402965: GlobalsInit (globals.c:117)
==2780== by 0x407624: LittleLangMachineRun (little_lang_machine.c:400)
==2780== by 0x406899: main (little_lang.c:13)
==2780==
==2780== 32 bytes in 1 blocks are definitely lost in loss record 380 of 506
==2780== at 0x4C2C9B4: calloc (vg_replace_malloc.c:711)
==2780== by 0x40CB3E: ValueAllocNoGC (value.c:65)
==2780== by 0x40D013: ValueMakeType (value.c:210)
==2780== by 0x402362: GlobalsInitTypeInfos (globals.c:52)
==2780== by 0x402965: GlobalsInit (globals.c:117)
==2780== by 0x407624: LittleLangMachineRun (little_lang_machine.c:400)
==2780== by 0x406899: main (little_lang.c:13)
...
==2780== 120 (48 direct, 72 indirect) bytes in 1 blocks are definitely lost in loss record 487 of 506
==2780== at 0x4C2AC3D: malloc (vg_replace_malloc.c:299)
==2780== by 0x40B35F: SymbolAlloc (symbol_table.c:18)
==2780== by 0x40B808: SymbolTableInsert (symbol_table.c:149)
==2780== by 0x411E86: RegisterRuntime_core (runtime_core.c:81)
==2780== by 0x411A58: RegisterRuntimes (registrar.c:18)
==2780== by 0x404A87: InterpreterInit (interpreter.c:721)
==2780== by 0x40763A: LittleLangMachineRun (little_lang_machine.c:404)
==2780== by 0x406899: main (little_lang.c:13)
==2780==
==2780== 878 (800 direct, 78 indirect) bytes in 20 blocks are definitely lost in loss record 498 of 506
==2780== at 0x4C2AC3D: malloc (vg_replace_malloc.c:299)
==2780== by 0x40631E: LexerGetNextToken (lexer.c:284)
==2780== by 0x406416: LexerSharedGetNext (lexer.c:307)
==2780== by 0x4067E7: LexerNextToken (lexer.c:388)
==2780== by 0x40BE14: TokenStreamAddExistingTokens (token_stream.c:46)
==2780== by 0x40BE8C: TokenStreamMake (token_stream.c:67)
==2780== by 0x40B07D: Parse (parser.c:1319)
==2780== by 0x407091: ParseProgramTrees (little_lang_machine.c:231)
==2780== by 0x40732D: LittleLangMachineLoadModule (little_lang_machine.c:304)
==2780== by 0x407662: LittleLangMachineRun (little_lang_machine.c:406)
==2780== by 0x406899: main (little_lang.c:13)
==2780==
==2780== LEAK SUMMARY:
==2780== definitely lost: 1,663 bytes in 44 blocks
==2780== indirectly lost: 301 bytes in 17 blocks
==2780== possibly lost: 0 bytes in 0 blocks
==2780== still reachable: 239,059 bytes in 8,458 blocks
==2780== suppressed: 0 bytes in 0 blocks
Returning -1 everywhere is ambiguous and should actually return a meaningful value.
A declarative, efficient, and flexible JavaScript library for building user interfaces.
๐ Vue.js is a progressive, incrementally-adoptable JavaScript framework for building UI on the web.
TypeScript is a superset of JavaScript that compiles to clean JavaScript output.
An Open Source Machine Learning Framework for Everyone
The Web framework for perfectionists with deadlines.
A PHP framework for web artisans
Bring data to life with SVG, Canvas and HTML. ๐๐๐
JavaScript (JS) is a lightweight interpreted programming language with first-class functions.
Some thing interesting about web. New door for the world.
A server is a program made to process requests and deliver data to clients.
Machine learning is a way of modeling and interpreting data that allows a piece of software to respond intelligently.
Some thing interesting about visualization, use data art
Some thing interesting about game, make everyone happy.
We are working to build community through open source technology. NB: members must have two-factor auth.
Open source projects and samples from Microsoft.
Google โค๏ธ Open Source for everyone.
Alibaba Open Source for everyone
Data-Driven Documents codes.
China tencent open source team.