mercurial/bdiff.h

profiling: improve 3.12 error message for calling lsprof twice

Python 3.12 prevent lsprof to be enabled if it is already enabled. This break
the use of lsprof in `hg serve` as both the initial `serve` command and the
request serving want to profile.

The "stat" profiler (the default) does not have this problem, so we focus on
improving the error message for now.

#ifndef HG_BDIFF_H
#define HG_BDIFF_H

#include "compat.h"

struct bdiff_line {
	int hash, n, e;
	ssize_t len;
	const char *l;
};

struct bdiff_hunk;
struct bdiff_hunk {
	int a1, a2, b1, b2;
	struct bdiff_hunk *next;
};

int bdiff_splitlines(const char *a, ssize_t len, struct bdiff_line **lr);
int bdiff_diff(struct bdiff_line *a, int an, struct bdiff_line *b, int bn,
               struct bdiff_hunk *base);
void bdiff_freehunks(struct bdiff_hunk *l);

#endif