System and Processes¶

Platform helpers for sleeping, timing, running shell commands, and making simple HTTP requests.

#include "abscom/abs.h"

Sleep¶

Function	Description
`void sleep_sec(double seconds)`	Block the calling thread for `seconds`.

print(v("waiting..."));
sleep_sec(1.0);
print(v("done"));

Time¶

Function	Description
`var time_now(void)`	Wall-clock seconds since the Unix epoch as a float.

var t0 = time_now();
sleep_sec(0.1);
var t1 = time_now();
print(sub(t1, t0));            /* ≈ 0.10 */

Shell commands¶

Function	Description
`var exec_cmd(const char *cmd)`	Run `cmd` through the platform shell; returns the exit status as an int.

var rc = exec_cmd("echo hello from abscom");
print(rc);                     /* 0 on success */

The command's stdout/stderr pass through to the process; the return value is the exit code.

HTTP GET¶

Function	Description
`var http_get(const char *url)`	GET a URL over plain HTTP and return the response body as a string.

var page = http_get("http://example.com/");
print(len(page));              /* body length in chars */

Constraints: - Plain HTTP only: the client always connects on port 80 (no https). - Blocking and synchronous. - Returns the body after the first \r\n\r\n; no redirect following.

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