The document discusses libtcc, a Tiny C Compiler, and GWAN, a web application server. Libtcc allows C scripting support and dynamic code generation. It can compile and run C code from strings at runtime. GWAN is a web app server that supports scripting in C, Java, and Object C. It can be downloaded, installed, and run with ./gwan on Linux systems. GWAN handlers are located in a csp folder.

1. libtcc AND GWAN
charsyam@naver.com

2. Language
Java
JavaScript
C
Scala

3. Platform
Node.js
Django
Play

4. Tcc: Tiny C Compiler
1. C Script Support

5. C Script
#! /usr/bin/tcc -run
int main()
{
printf("Hello Worldn");
return 0;
}

6. Tcc: Tiny C Compiler
2. Dynamic Code
Generation

7. Code Generation
int add(int a, int b)
{
return a + b;
}
char my_program[] =
"int foo(int n)n"
"{n"
" printf("Hello World!n");n"
" printf("fib(%d) = %dn", n, fib(n));n"
" printf("add(%d, %d) = %dn", n, 2 * n, add(n, 2 * n));n"
" return 0;n"
"}n";

8. Code Generation
TCCState *s;
s = tcc_new();
tcc_set_output_type(s, TCC_OUTPUT_MEMORY);
if (tcc_compile_string(s, my_program) == -1)
return 1;
tcc_add_symbol(s, "add", add);
size = tcc_relocate(s, NULL);
if (size == -1)
return 1;
mem = malloc(size);
tcc_relocate(s, mem);
func = tcc_get_symbol(s, "foo");
if (!func)
return 1;
tcc_delete(s);
func(32);
free(mem);

9. Code Generation
charsyam@charsyam-
lv63:~/repo/libtcc$ ./a.out
Hello World!
fib(32) = 2178309
add(32, 64) = 96

10. GWan
Web Application Server

11. GWan
Support Scripting
C
Java
Object C

12. GWan
wget http://gwan.com/archives/gwan_linux64-bit.tar.bz2
tar -xjf gwan_linux64-bit.tar.bz2
cd gwan_linux64-bit
sudo ./gwan (./gwan -h for help)
Need javac, gobjc, gobjc++

13. GWan
charsyam@ubuntu:~/apps/gwan/0.0.0.0_8080/#0.0.0.0/csp/fo
lder$
실제 핸들러 위치

14. Thank You!