upstream/mercurial-mirror Files · mercurial/bitmanipulation.h

tests: add a module that can perform the equivalent of `SIGKILL` on any OS...

tests: add a module that can perform the equivalent of `SIGKILL` on any OS I started with this being Windows specific, but let's push all of the decision making into this function so that it can just be called by the tests. The tradeoff is that this is very specific to sending `SIGKILL`- since `signal.SIGKILL` doesn't exist on Windows, the desired signal can't be passed from the caller. Maybe there's a way, but let's wait until there's a need. We don't use `killdaemons.py` unconditionally because it starts with a more graceful `SIGTERM` on posix.

David Demelier - - Load All Authors

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      #ifndef HG_BITMANIPULATION_H

      #define HG_BITMANIPULATION_H

      #include <string.h>

      #include "compat.h"

      /* Reads a 64 bit integer from big-endian bytes. Assumes that the data is long

       enough */

      static inline uint64_t getbe64(const char *c)

      {

      	const unsigned char *d = (const unsigned char *)c;

      	return ((((uint64_t)d[0]) << 56) | (((uint64_t)d[1]) << 48) |

      	        (((uint64_t)d[2]) << 40) | (((uint64_t)d[3]) << 32) |

      	        (((uint64_t)d[4]) << 24) | (((uint64_t)d[5]) << 16) |

      	        (((uint64_t)d[6]) << 8) | (d[7]));

      }

      static inline uint32_t getbe32(const char *c)

      {

      	const unsigned char *d = (const unsigned char *)c;

      	return ((((uint32_t)d[0]) << 24) | (((uint32_t)d[1]) << 16) |

      	        (((uint32_t)d[2]) << 8) | (d[3]));

      }

      static inline int16_t getbeint16(const char *c)

      {

      	const unsigned char *d = (const unsigned char *)c;

      	return ((d[0] << 8) | (d[1]));

      }

      static inline uint16_t getbeuint16(const char *c)

      {

      	const unsigned char *d = (const unsigned char *)c;

      	return ((d[0] << 8) | (d[1]));

      }

      /* Writes a 64 bit integer to bytes in a big-endian format.

       Assumes that the buffer is long enough */

      static inline void putbe64(uint64_t x, char *c)

      {

      	c[0] = (x >> 56) & 0xff;

      	c[1] = (x >> 48) & 0xff;

      	c[2] = (x >> 40) & 0xff;

      	c[3] = (x >> 32) & 0xff;

      	c[4] = (x >> 24) & 0xff;

      	c[5] = (x >> 16) & 0xff;

      	c[6] = (x >> 8) & 0xff;

      	c[7] = (x)&0xff;

      }

      static inline void putbe32(uint32_t x, char *c)

      {

      	c[0] = (x >> 24) & 0xff;

      	c[1] = (x >> 16) & 0xff;

      	c[2] = (x >> 8) & 0xff;

      	c[3] = (x)&0xff;

      }

      static inline double getbefloat64(const char *c)

      {

      	const unsigned char *d = (const unsigned char *)c;

      	double ret;

      	int i;

      	uint64_t t = 0;

      	for (i = 0; i < 8; i++) {

      		t = (t << 8) + d[i];

      	}

      	memcpy(&ret, &t, sizeof(t));

      	return ret;

      }

      #endif

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				#ifndef HG_BITMANIPULATION_H
				#define HG_BITMANIPULATION_H

				#include <string.h>

				#include "compat.h"

				/* Reads a 64 bit integer from big-endian bytes. Assumes that the data is long
				enough */
				static inline uint64_t getbe64(const char *c)
				{
				const unsigned char d = (const unsigned char )c;

				return ((((uint64_t)d[0]) << 56) \| (((uint64_t)d[1]) << 48) \|
				(((uint64_t)d[2]) << 40) \| (((uint64_t)d[3]) << 32) \|
				(((uint64_t)d[4]) << 24) \| (((uint64_t)d[5]) << 16) \|
				(((uint64_t)d[6]) << 8) \| (d[7]));
				}

				static inline uint32_t getbe32(const char *c)
				{
				const unsigned char d = (const unsigned char )c;

				return ((((uint32_t)d[0]) << 24) \| (((uint32_t)d[1]) << 16) \|
				(((uint32_t)d[2]) << 8) \| (d[3]));
				}

				static inline int16_t getbeint16(const char *c)
				{
				const unsigned char d = (const unsigned char )c;

				return ((d[0] << 8) \| (d[1]));
				}

				static inline uint16_t getbeuint16(const char *c)
				{
				const unsigned char d = (const unsigned char )c;

				return ((d[0] << 8) \| (d[1]));
				}

				/* Writes a 64 bit integer to bytes in a big-endian format.
				Assumes that the buffer is long enough */
				static inline void putbe64(uint64_t x, char *c)
				{
				c[0] = (x >> 56) & 0xff;
				c[1] = (x >> 48) & 0xff;
				c[2] = (x >> 40) & 0xff;
				c[3] = (x >> 32) & 0xff;
				c[4] = (x >> 24) & 0xff;
				c[5] = (x >> 16) & 0xff;
				c[6] = (x >> 8) & 0xff;
				c[7] = (x)&0xff;
				}

				static inline void putbe32(uint32_t x, char *c)
				{
				c[0] = (x >> 24) & 0xff;
				c[1] = (x >> 16) & 0xff;
				c[2] = (x >> 8) & 0xff;
				c[3] = (x)&0xff;
				}

				static inline double getbefloat64(const char *c)
				{
				const unsigned char d = (const unsigned char )c;
				double ret;
				int i;
				uint64_t t = 0;
				for (i = 0; i < 8; i++) {
				t = (t << 8) + d[i];
				}
				memcpy(&ret, &t, sizeof(t));
				return ret;
				}

				#endif