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Thread safe port properties.

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* libguile/ports.c (scm_i_port_property, scm_i_set_port_property_x):
  Lock the port mutex while accessing the port alist.

* libguile/read.c (set_port_read_option): Lock the port mutex
  while modifying port read options.
This commit is contained in:
Mark H Weaver 2013-12-01 18:29:33 -05:00
commit 79657fd3ec
2 changed files with 18 additions and 1 deletions
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6
libguile/read.c
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@ -2157,6 +2157,10 @@ set_port_read_option (SCM port, int option, int new_value)
unsigned int read_options;
new_value &= READ_OPTION_MASK;
scm_dynwind_begin (0);
scm_dynwind_lock_port (port);
scm_read_options = scm_i_port_property (port, sym_port_read_options);
if (scm_is_unsigned_integer (scm_read_options, 0, READ_OPTIONS_MAX_VALUE))
read_options = scm_to_uint (scm_read_options);
@ -2166,6 +2170,8 @@ set_port_read_option (SCM port, int option, int new_value)
read_options |= new_value << option;
scm_read_options = scm_from_uint (read_options);
scm_i_set_port_property_x (port, sym_port_read_options, scm_read_options);
scm_dynwind_end ();
}
/* Set OPTS and PORT's case-insensitivity according to VALUE. */