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Merge 10.2 into 10.3

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This commit is contained in:
Marko Mäkelä
2019-05-02 21:43:24 +03:00
parent 0d6fb43e6d 2370eeb028
commit 158247d3bd
8 changed files with 149 additions and 35 deletions
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46
sql/signal_handler.cc
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@@ -30,6 +30,10 @@
#define SIGNAL_FMT "signal %d"
#endif
#ifndef PATH_MAX
#define PATH_MAX 4096
#endif
/*
We are handling signals/exceptions in this file.
Any global variables we read should be 'volatile sig_atomic_t'
@@ -44,6 +48,43 @@ extern volatile sig_atomic_t ld_assume_kernel_is_set;
extern const char *optimizer_switch_names[];
static inline void output_core_info()
{
/* proc is optional on some BSDs so it can't hurt to look */
#ifdef HAVE_READLINK
char buff[PATH_MAX];
ssize_t len;
int fd;
if ((len= readlink("/proc/self/cwd", buff, sizeof(buff))) >= 0)
{
my_safe_printf_stderr("Writing a core file...\nWorking directory at %.*s\n",
(int) len, buff);
}
if ((fd= my_open("/proc/self/limits", O_RDONLY, MYF(0))) >= 0)
{
my_safe_printf_stderr("Resource Limits:\n");
while ((len= my_read(fd, (uchar*)buff, sizeof(buff), MYF(0))) > 0)
{
my_write_stderr(buff, len);
}
my_close(fd, MYF(0));
}
#ifdef __linux__
if ((fd= my_open("/proc/sys/kernel/core_pattern", O_RDONLY, MYF(0))) >= 0)
{
len= my_read(fd, (uchar*)buff, sizeof(buff), MYF(0));
my_safe_printf_stderr("Core pattern: %.*s\n", (int) len, buff);
my_close(fd, MYF(0));
}
#endif
#else
char buff[80];
my_getwd(buff, sizeof(buff), 0);
my_safe_printf_stderr("Writing a core file at %s\n", buff);
fflush(stderr);
#endif
}
/**
* Handler for fatal signals on POSIX, exception handler on Windows.
*
@@ -295,13 +336,10 @@ extern "C" sig_handler handle_fatal_signal(int sig)
}
#endif
output_core_info();
#ifdef HAVE_WRITE_CORE
if (test_flags & TEST_CORE_ON_SIGNAL)
{
char buff[80];
my_getwd(buff, sizeof(buff), 0);
my_safe_printf_stderr("Writing a core file at %s\n", buff);
fflush(stderr);
my_write_core(sig);
}
#endif