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- XtMalloc(3Xt) XT FUNCTIONS XtMalloc(3Xt)
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- NNAAMMEE
- XtMalloc, XtCalloc, XtRealloc, XtFree, XtNew, XtNewString
- - memory management functions
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- SSYYNNTTAAXX
- char *XtMalloc(_s_i_z_e);
- Cardinal _s_i_z_e;
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- char *XtCalloc(_n_u_m, _s_i_z_e);
- Cardinal _n_u_m;
- Cardinal _s_i_z_e;
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- char *XtRealloc(_p_t_r, _n_u_m);
- char *_p_t_r;
- Cardinal _n_u_m;
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- void XtFree(_p_t_r);
- char *_p_t_r;
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- _t_y_p_e *XtNew(_t_y_p_e);
- _t_y_p_e;
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- String XtNewString(_s_t_r_i_n_g);
- String _s_t_r_i_n_g;
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- AARRGGUUMMEENNTTSS
- _n_u_m Specifies the number of bytes or array elements.
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- _p_t_r Specifies a pointer to the old storage or to the
- block of storage that is to be freed.
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- _s_i_z_e Specifies the size of an array element (in
- bytes) or the number of bytes desired.
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- _s_t_r_i_n_g Specifies a previously declared string.
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- _t_y_p_e Specifies a previously declared data type.
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- DDEESSCCRRIIPPTTIIOONN
- The _X_t_M_a_l_l_o_c functions returns a pointer to a block of
- storage of at least the specified size bytes. If there is
- insufficient memory to allocate the new block, _X_t_M_a_l_l_o_c
- calls _X_t_E_r_r_o_r_M_s_g.
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- The _X_t_C_a_l_l_o_c function allocates space for the specified
- number of array elements of the specified size and ini-
- tializes the space to zero. If there is insufficient mem-
- ory to allocate the new block, _X_t_C_a_l_l_o_c calls _X_t_E_r_r_o_r_M_s_g.
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- The _X_t_R_e_a_l_l_o_c function changes the size of a block of
- storage (possibly moving it). Then, it copies the old
- contents (or as much as will fit) into the new block and
- frees the old block. If there is insufficient memory to
- allocate the new block, _X_t_R_e_a_l_l_o_c calls _X_t_E_r_r_o_r_M_s_g. If
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- X Version 11 Release 6.1 1
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- XtMalloc(3Xt) XT FUNCTIONS XtMalloc(3Xt)
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- ptr is NULL, _X_t_R_e_a_l_l_o_c allocates the new storage without
- copying the old contents; that is, it simply calls
- _X_t_M_a_l_l_o_c.
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- The _X_t_F_r_e_e function returns storage and allows it to be
- reused. If ptr is NULL, _X_t_F_r_e_e returns immediately.
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- _X_t_N_e_w returns a pointer to the allocated storage. If
- there is insufficient memory to allocate the new block,
- _X_t_N_e_w calls _X_t_E_r_r_o_r_M_s_g. _X_t_N_e_w is a convenience macro that
- calls _X_t_M_a_l_l_o_c with the following arguments specified:
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- ((type *) XtMalloc((unsigned) sizeof(type))
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- _X_t_N_e_w_S_t_r_i_n_g returns a pointer to the allocated storage.
- If there is insufficient memory to allocate the new block,
- _X_t_N_e_w_S_t_r_i_n_g calls _X_t_E_r_r_o_r_M_s_g. _X_t_N_e_w_S_t_r_i_n_g is a conve-
- nience macro that calls _X_t_M_a_l_l_o_c with the following argu-
- ments specified:
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- (strcpy(XtMalloc((unsigned) strlen(str) + 1), str))
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- SSEEEE AALLSSOO
- _X _T_o_o_l_k_i_t _I_n_t_r_i_n_s_i_c_s _- _C _L_a_n_g_u_a_g_e _I_n_t_e_r_f_a_c_e
- _X_l_i_b _- _C _L_a_n_g_u_a_g_e _X _I_n_t_e_r_f_a_c_e
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- X Version 11 Release 6.1 2
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